Dimensions of interior door frames, various standards, GOSTs

Why do we need standards?

Indeed, who needs standard sizes of doorways, wouldn’t it be easier to arrange a doorway, the size of which will be exclusive and made specifically to your taste.
The trick is that the standard size is more of a recommendation than a mandatory parameter, but believe me, it’s worth listening to these recommendations and there are several reasons for this:

• Large selection of standard models. Absolutely all manufacturers make the bulk of their goods according to one or another fixed dimensions. Consequently, you will not have problems with the choice if the size of the doorway is adjusted to some traditional standard;
• An equally important reason is budget savings. Of course, in any decent workshop they will make you a beautiful door according to individual sizes, but it will cost at least a third more than the serial version, plus keep in mind that sooner or later the doors will have to be changed and you will again have to pay extra money;
• And finally, any master will confirm to you that it is much easier to work with fixed dimensions, because all the extensions, platbands and other accessories for the door are “tailored” to fit standard doorways.

Door classification

Classification of various doors according to GOST is carried out according to many parameters. One of these parameters is the purpose of the doors. If you look at the list of standards for wooden door structures, they are divided into:

• Wooden internal doors. They are intended for installation in residential premises and public buildings;
• Wooden doors for industrial premises;
• External wooden door blocks for residential and public buildings;
• PVC door structures;
• Metal doors for any buildings and premises;
• Door structures made of aluminum alloys;
• Protective door panels;
• Fire protection systems;
• Bank security products.

Doors can be either frame or panel. In addition, the canvas can be equipped with various transoms and thresholds, but this is not necessary. Depending on the number of leaves, the door leaf can be single-leaf or double-leaf. The sizes of individual sashes can be either the same or different. The canvas can also be glazed or solid, with a normal or high level of resistance to moisture.

Another sign by which GOST classifies doors is the direction, as well as the methods of opening the door leaf.

Depending on the mechanisms used in the design, there are several types of doors.

The most popular are swing products. They can only open in one direction. Doors are called left-handed if the door moves clockwise when opening. The right doors, accordingly, will open in the other direction. This is the most popular solution that is used almost everywhere.

A swing door is one of the types of swing doors. The peculiarity of this solution is that the doors can swing open in any direction.

GOST also describes sliding doors. These products are widely used in small apartments. With the help of such a door you can significantly save space in the room. The door leaf opens by sliding to the side.

Non-standard doors

In private cottages, “Stalin” buildings, and apartments with individual layouts, the openings are most often non-standard - more expensive non-standard doors have to be installed in them.

You can order a swing model exactly to fit the dimensions of the opening or choose a solution that does not require rebuilding the passage. For example, sliding doors “compartments” and folding doors-books are installed without a frame - the doors move along roller guides.

There is no need to rush into ordering a custom door. A wide kitchen opening can be fitted with a standard door for a living room with a door leaf of 800 mm, and for the passage to the bathroom - a ready-made kit for a standard kitchen with a door of 700 mm.

Wooden doors

Door leaves made of wood, according to GOST, can be divided into internal and external. They are manufactured in accordance with GOST-475-78, which describes all the general requirements that apply to any wooden door structures for residential premises and outbuildings. It also describes wooden doors for public buildings.

This standard includes parameters by which wooden door structures can be classified, information on the technical part, and configuration options. The document also specifies all the conditions under which the finished product is accepted, describes quality control methods, transportation methods and packaging rules.

Interior wooden doors

In the production of wooden doors, which are intended for installation inside various types of premises, other regulatory documents are used. Internal doors are regulated by GOST 6629-88. The requirements of the document will not apply to special-purpose products. Also, GOST 6629-88 does not apply to products manufactured to individual orders, as well as to doors made from valuable wood species.

Marking internal wooden doors according to GOST helps to understand the designations.

• G – door with a blind leaf;
• U - reinforced filling, which allows the canvas to be used as an entrance door on staircases in the entrances of multi-storey buildings;
• O – canvas with glazing;
• K – door block with a swinging leaf.

Also, from the markings you can find out some of the dimensions and design features of the doors. The door designation encodes the dimensions of the door leaf and the opening for it, the type of product - only the door leaf - P, or the door block - D. Various design features are also indicated in the designation - P - door with threshold, N - with overlap, L or P - opening side.

The labeling must indicate the GOST number, which must be used during the production process. For a double-leaf door structure, where the width of the leaves is different, the dimensions of the leaves are also indicated.

The height of a standard door is 2000 and 2500 mm, while the width of a single-leaf structure is from 600 mm to 1100 mm (if the door is solid or reinforced), from 700 mm to 1100 mm for glazed products. According to the standard, a double-leaf model can have a width from 1202 mm to 1802 mm.

As a material from which interior internal doors can be made, GOST suggests using everything that is described in GOST 475. Well-dried pine, birch, aspen, linden, poplar are used as raw materials - these are hardwoods that do not contradict the document. There is also a requirement for the quality of materials - the wood should not have knots, voids or other defects. The standard allows the use of other wood materials.

Sliding interior doors

In our country, sliding door systems are not regulated by any separate documents. When manufacturing them, manufacturers are guided by GOST 6628-88, which covers all internal doors for residential as well as public premises without exception.

Sliding doors also do not require mandatory certification, however, many manufacturers try to confirm the quality of their products as much as possible.

Sliding doors are classified by the number of leaves and the type of opening. Thus, there are single-leaf and double-leaf structures. Depending on the type of opening, there are sliding and folding options.

As for the materials, they are the same as for ordinary swing door models. The production of glass products is also allowed, but it is necessary that the glass be tempered and enclosed in a frame made of aluminum alloys.

Exterior wooden doors

The production of external door blocks, which are intended for installation in residential or public premises, is regulated by GOST 24698-81. This document specifies the dimensions, types and design of a standard swing door. There are no unique designs in this standard.

This GOST defines several types of external door solutions - N - entrance and vestibule doors, S - service doors, L - doors to hatches and manholes.

In addition to the letters that indicate the type of structure, the markings also contain the overall dimensions of the doorway and the type of door leaf. For example, G is a solid sheet, K is a swinging sheet, P is a rotary sheet, T is fire-resistant, U is insulated, Shch is panel board, O is sheathing.

Entrance door sizes

The dimensions of entrance door openings are also standardized. They are described in GOST 6629-88. If you want to install standard products, make openings according to the recommendations. If you are building your own house, it is better not to install entrance doors smaller than the minimum width. And it’s not just the difficulty of finding suitable canvas dimensions. The fact is that there is a very high probability that the fire or gas department will force you to redo it.

Companies have their own standards for technical specifications

So, standard sizes of entrance doors can be:

• leaf width for single doors - 900 mm, 1100 mm;
• for double doors - 1400 mm (700 mm + 700 mm); 1800 mm (900 mm +900 mm).

If we talk about what is available for sale, then there are any doors. Moreover, you can order iron or wooden ones of any thickness. But again, this is non-standard. Although, the entrance ones are changed much less often than the interior ones.

Installation is easier with a standard doorway

A few words about what the doorway for the entrance doors should be like. According to the same standard, it should be 70 mm wider than the door leaf for single-leaf doors and 72 mm wider for double-leaf doors. These are the minimum values. A wider opening is possible, but a smaller one is not. The height of the doorway for installing the entrance door should be 71 mm larger. That is, for an entrance door with a leaf 900 mm wide, you need an opening of at least 970 * 2371 mm. Same with the others.

GOST provides the following parameters:

Width:

• Single leaf 700 - 900 mm (in increments of 100 mm) and 1200 mm. It is recommended to install single-leaf doors in such doorways.
• Openings with a width of 1300 mm, 1500 mm and 1900 mm are made for double-leaf doors (or as they are called in the standard, double-leaf panels).

The standard height of the doorway can be only in two options: 2100 mm and 2300 mm. The minimum permissible height is 2071 mm and 2271 mm, respectively.

These are the reference dimensions of doorways. Of course, there are permissible deviations: the doorway may be 20-25 mm narrower than the standard one. This will not prevent you from installing a standard door block there. However, the installation process itself, of course, will not make this easier, since you will have to make the installation gap smaller. The same deviation (but not more) is allowed for each standard width.

Dimensions of doorways according to GOST in accordance with standard dimensions of door panels

Standard is an advantage when it comes to door parameters. When choosing a standard design, you don’t have to wonder how to hang other hinges or expand (narrow) the place where the canvas with the box will be installed.

Production of wooden doors according to GOST 24698-81 and 6629-88

The door leaf is lined with HDF (high-density fiberboard made in Germany). Possible colors:

• Unpainted;
• White;
• BEECH;

HDF factory painting

The frame of the canvas is made of dry coniferous wood.

Door leaf filler – the filling depends on the type (DO, DT, DU, DN, DS) and can be of the “honeycomb” type (hardboard grating) or solid.

Bevel angle – according to GOST, the bevel angle is 2.5 degrees. This function allows you to avoid the door “sticking” in the opening when opening/closing.

The door frame is spliced ​​from solid pine with a section of 75x35mm.

Painting – the ends of the door leaf and door frame are painted with VDAK paint (water-dispersed acrylic paint), which is an environmentally friendly material.

Fittings and insert

– each door block is equipped with hinges. At the request of the customer, specialists will make an insert in the canvas for any locking fittings (lock, latch, etc.). The insertion is carried out using special professional equipment.

How to determine what width the door leaf should be installed

If the doors are simply being replaced, the easiest way is to measure the door that is already in place. You definitely can't go wrong. If you are installing doors for the first time, you need to measure the doorway and select an option that will require minimal effort during installation.

The width of the interior door frame depends on the existing opening

How to measure a doorway

To choose the correct size of a door or door block, you need to know the exact dimensions of the opening in which they will be installed. Measurements are carried out using a regular construction tape. We measure any parameter at least at two points. If the difference is visually visible, you can measure more times, adjusting the position of the tape measure at your discretion.

To make sure that the size of the doorway is standard, take a tape measure and measure the actual parameters of the passage

The height of the doorway is measured at one and the other jamb, the width at the top and bottom, approximately at a distance of 30-50 cm from the floor and lintel. You can also take measurements in the middle of the height. You also need to measure the thickness of the opening (wall thickness). It must be checked at least at two points on each side.

We record all measurements. It is better to do this on a diagram of the doorway. If there are deviations, we look at how serious the situation is and whether it can be corrected. If the “narrowest” place corresponds to the smallest possible standard opening, you can leave everything as is. Otherwise, you will have to try to correct the situation. It is already described above how.

You need to check the geometry of the opening. Otherwise there will be difficulties during installation

But size isn't everything. It is necessary to check whether there are any deviations in geometry. The side walls of doorways should be vertical, and the lintel should be horizontal. You can check the correctness of the shape using a regular building level (bubble level), but it is more convenient and more accurate to use a level. You can check the side walls with a regular plumb line. If the deviations are large, they need to be corrected. If their size is within a centimeter, it will be possible to compensate during installation using mounting plates and construction foam.

What to focus on

First of all, remember: there are standards for interior and exterior doors. In the Soviet Union there was GOST 6629-88, which is still alive today, but now DIN 18100, DIN 18101 and DIN 18102 have been added to it, which already takes into account the dimensions of the opening taking into account European requirements, as well as standards for iron doors.

Currently working GOST 6629-88..

If the documents on the doors indicate that they were assembled according to some technical specifications (TU), and not according to generally accepted GOSTs, be careful. The technical specifications are developed by the manufacturer himself and they are only distantly related to standards, therefore, sizes can vary over a fairly wide range.

Dimensions of door blocks made according to technical specifications.

Interior doors

If you live in an apartment or house with ceilings up to 2.7 m, then the standard opening height often fluctuates around 2 m, with a tolerance of about 100 mm in one direction or another.

General installation diagram of interior doors.

The dimensions of openings in residential premises with high ceilings can reach up to 2.3 m. Anything higher, for example arches, does not fall under the generally accepted standard and belongs to the scope of individual orders.

There is one more nuance. Block houses, that is, brick, cinder block, foam concrete, and so on, are considered stable. Shrinkage in such buildings is minimal and lasts a maximum of a couple of years. This means that you can leave a gap of 10 - 15 mm around the perimeter of the door block and this will be quite enough.

Wooden houses are a completely different matter. For example, in log cabins, the shrinkage of a house lasts at least 3 years, and if the forest is poorly dried, then shrinkage can take 7–10 years.

Therefore, a gap of at least 30 - 50 mm must be left above the door frame. This gap is filled with foam and closed with platbands, but if it is not there, the frame can become distorted and even crushed.

Dimensions of openings and door blocks according to DIN 18100 – 18102.

To select a door, you must first of all focus on the size of the door leaf. If you follow our standards, the width of the leaf for interior doors starts from 600 mm and ends at 900 mm, graduated in increments of 10 cm.

In addition, narrow doors are still produced for small apartments and technical rooms; as a rule, they are installed on bathrooms.

The width of the canvas here is 550 mm and the height is 1900 mm. They are included in the standard, but they are not particularly popular, so the assortment there is “poor”.

Doors with a leaf width of 60–70 cm are usually installed in the kitchen and services; for rooms it is better to choose a leaf with a width of 80–90 cm.

The height of the installed frame with the door leaf and threshold.

Many owners often get burned by imported doors. To tell the truth, the single European standard is a beautiful myth; it practically does not concern doors. In the vastness of the former Soviet Union and the camp of the socialist camp there is more order, here the goods are made according to the above-mentioned GOSTs.

The Germans and Spaniards also adhere to our standards, but the French make doors 10 mm narrower than everyone else’s, that is, 690 mm, 790 mm and 890 mm.

Reputable Italian manufacturers are more focused on our market, but they are often counterfeited, so don’t be lazy, take a tape measure and measure the door block, you will agree that it will be a shame to pay a lot of money for a supposedly Italian thing that then won’t fit in or, on the contrary, will “dangle” in the doorway.

A selection of sizes for the most common doorways.

In addition to the height and width of the doorway, you also need to take into account the thickness of the walls and the thickness of the doors themselves. The standard thickness for interior partitions is 75 mm, but if the opening is made in a load-bearing wall, then the thickness there can reach half a meter or more.

The maximum thickness of a serial door block is 128 mm. Ideally, the door should be mounted in the center of the opening, but on thick walls it will be necessary to install additional strips on both sides.

As an option, you can install the door block along any edge and cover it with platbands on one side, and instead of extensions, on the other side, arrange slopes and cover the non-joint with a self-adhesive strip.

The width of the installed frame with the door leaf.

Interior door leaves have several thickness gradations:

• Lightweight hollow structures are made from 20 to 40 mm thick;
• Standard MDF doors are 35 - 40 mm;
• Wooden sheets with quarter grooves 35 – 45 mm;
• Completely natural wood without sampling 45 – 55 mm.

We select the sizes of interior doors and blocks

As already mentioned, the dimensions of interior doors are determined based on the dimensions of the existing opening. Doors are sold as a block assembled with a frame or just one leaf. It is more convenient to take the block - this speeds up installation. But it will be cheaper to buy the canvas separately and assemble the box. Here you choose either to pay less, but spend time and put in extra effort, or save time, but spend more money.

If you decide to buy a door block, make sure that its width (according to the outer dimensions of the door frame) is slightly less than the width of the opening. The minimum installation gap is 10-15 mm, optimal is 25-35 mm.

Dimensions of interior doors and openings: recommendations for selection

When purchasing only a door leaf, it is assumed that it should be 80-100 mm narrower than the opening. You will also need to add two jambs, and this is at least twice 25 mm each, plus an installation gap of 10-15 mm, plus a gap on the sides of the door leaf - 5 mm. Total we get: 25*2 + 15 + 5 = 70 mm. This is the minimum value that must be added to the width of the door. The resulting figure should be equal to or less than the width of the doorway in which it will be installed.

What dimensions are best to use and how to determine them

Now let's talk about how to choose the optimal dimensions. It's easier to determine the height. It all depends on the height of the ceiling. Yes, and we choose from only two options: 2.1 m and 2.3 m. The width is more difficult, since there are more options. There are some recommendations regarding the minimum sizes of doors (not openings, but doors). The opening itself should be 70-100 mm wider. These are the recommendations:

• In technical rooms (storage rooms, bathrooms, baths and toilets) the recommended width of the canvas is 600 mm.
• For kitchens the minimum is 700 mm.
• For living rooms, at least 800 mm is recommended.

It is not recommended to reduce these sizes. Enlarge at your own discretion, based on the size of the doorway. Also, when choosing a door leaf, you need to take into account the size of people and the purpose of the room in which this leaf will be installed. For example, not everyone will find it convenient to use a door 550 cm wide, and in the kitchen and other rooms with fire and explosive equipment, the width of the doors is determined by the fire safety service.

If you are simply replacing old doors with new ones, it is best to simply measure the door that is already in place. If the doors are being installed for the first time, you will need to take all the necessary measurements and select the appropriate option.

For measurements you will need a regular construction tape measure. All parameters are measured at least at two points. If necessary, you can measure more times, as accuracy is important.

We measure the height at both jambs, the width at the top and bottom, approximately at a distance of 30-50 cm from the bottom and top. You can also take measurements in the middle of the height. In addition, we measure the thickness of the opening (wall). We do this at at least two points on each side. Having made all the measurements, we check the geometry of the opening and, if necessary, make adjustments.

You can check the correctness of the geometric shape using a building level or level. The permissible deviation is within a centimeter. In this case, errors can be compensated for during installation using mounting plates and construction foam.

After all the measurements and checks, we know the dimensions of our doorway and can begin purchasing the door. They are sold either as a block complete with a box, or as one sheet separately. When choosing between these configurations, you should proceed from what is more important to you: saving time or money. The block will be faster and easier to install, but the canvas and box separately will be cheaper.

When purchasing a block, make sure that its width (external dimensions of the door frame) is less than the width of the doorway. The minimum installation gap is 10-15 mm, optimal is 25-35 mm.

Separately, the door leaf, unlike the block, should be 80-100 mm narrower than the opening. To this you need to add two jambs (minimum 25 mm each), a gap on the sides of the door leaf of about 5 mm and the same installation gap of 10-15 mm. As a result, we got 70 mm. This is the minimum that must be added to the width of the door. And the result should be no more than the width of the doorway.

Thus, based on all of the above, you can easily choose an interior door for yourself. The main thing is to adhere to GOST.

What dimensions do you need to know and how to measure?

When preparing to install a new front door or replace an old one, it is important to consider and know how the following dimensions are determined:

• opening for the block - height, width and depth of the opening in the wall;
• block - the height and width of the assembled product;
• leaf - height and width of the opening sash;
• clearance - the width and height of the clearance when the canvas is open at 90º.

The block is measured in several stages:

1. The width and height are measured from one wall to another. If there is an old door, the platbands are dismantled, freeing up the wall.
2. Measurements are taken in 2-3 places, which allows you to determine distortions and carry out work to narrow or widen the opening.

Today, door openings vary in type and size. The dimensions of new buildings differ significantly from the opening dimensions of Soviet-era buildings. In different houses, openings may narrow, widen, or not be equipped with a niche at the entrance, so metal blocks sometimes have different sizes even within the same entrance.

About standard sizes

In accordance with SNiP 210197 (sanitary standards and rules on fire safety of buildings and structures) clause 6.9, entrance doors are an exit to evacuation. According to part 6.16. of the same document, the height of such a door should not be lower than 1900 m, and the transverse length should not be less than:

• 1200 mm - in the case of kindergartens, hospitals, special homes for the elderly and people with disabilities, when the number of people being evacuated is 15 people or more; when we are talking about structures of other classes of structural fire hazard (except for multi-apartment residential buildings), then the number of evacuees is over 60 people.
• 800 mm – in other cases.

The parameters of external metal structures on landings and in the room before entering the internal parts of buildings must have the parameters specified in paragraph 6.29.

The width of the exit leading to the evacuation route must be such that ambulance stretchers with people can be easily carried through it.

The parameters of entrance structures are determined by state standards, but their standards do not apply to special-purpose systems and doors installed at capital construction sites. The dimension of the canvas is determined by the dimensions of the opening. Where is it planned to be installed?

Not standard dimensions

What to do if you still do not meet the standard dimensions, namely, the passage is narrower than it should be according to the standard? Your further actions depend on how much you did not meet the standard, as well as on the material of the walls. If the walls can be machined, then we can say that you are lucky and the missing millimeters can be removed. Choose the method and tool for this that you want: axe, chisel, chisel, grinder, etc. Most often, some pair of protrusions get in the way. Try to get as close to the desired size as possible.

If the walls are too strong for all of the above, then all that remains is to adjust the opening to the next smaller standard value. This can be done in two ways:

1. Lay it with bricks, pieces of building blocks, and plaster.
2. Install the embedded beam (treated with an antiseptic and dried), which is also covered with plaster, aligned in a plane with the walls.

However, this is still better than leaving a doorway of non-standard dimensions!

Marking of door products

With product labeling, everything is quite complicated. Of course, there are specific standardized marking guidelines, but in some cases the general standards may vary depending on the manufacturer. It often happens that designs made using identical methods and outwardly similar can be named and labeled differently.

The dimensions of interior doors are determined by standards

They build high-rise buildings taking into account all the requirements (or should build this way). If the opening has special dimensions, you will only have to order the doors. And this is a big expense, and there is no guarantee that you will like the finished product.

Dimensions according to GOST

So, even during a major renovation or construction of your own home, or when constructing interior partitions in a new building, in any case, we install standard doorways. GOST provides the following parameters:

• Width: Single leaf 700 - 900 mm (in increments of 100 mm) and 1200 mm. It is recommended to install single-leaf doors in such doorways.
• For double-leaf doors (the standard uses the term double-leaf doors), openings with a width of 1300 mm, 1500 mm and 1900 mm are made.

Dimensions of interior doors and openings according to standard

These are the dimensions of standard doorways. No others. As for permissible deviations, the doorway can be 20-25 mm narrower than the standard one. In this case, it will also be possible to install a standard door block. Only the installation gap will be smaller, which will not make the work easier. That is, the narrowest doorway can be 675 mm (instead of 700 mm). Using the same principle, you can calculate the permissible deviation relative to each standard width. It can be reduced slightly, but not more than 25 mm.

Sources

• https://doorchange.ru/montazh/vysota-i-shirina-dvernogo-proema-po-gostu-i-bez.html
• https://o-dveryah.ru/bezopasnost/dveri-gost/
• https://flat-house.info/razmery-korobok-mezhkomnatnyx-dverej-razlichnye-standarty-gosty/
• https://MisterDver.ru/choice/chto-znaet-gost-o-standartnyx-razmerax-dverej/
• https://dverigost.ru/
• https://handspc.ru/gost-6629-88-dveri-derevannye-vnutrennie-dla-zilyh-i-obsestvennyh-zdanij-tipy-i-konstrukcia
• https://kak-sdelano.ru/dveri/razmeryi-mezhkomnatnyix-dverej-po-standartu-i-proemov-pod-nix

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Convenient sizes of interior doors

It is easier to determine the height of doorways. Everything here is tied up at the height of the ceiling. And the choice is small - only two options - 2.1 m and 2.3 m. But what about the width? There are more opportunities here. In general, there are certain recommendations that relate to the minimum door sizes. Namely doors, and not openings under them. The opening should be 70-100 mm wider. So, the dimensions of interior doors must be no less than the specified width:

• In technical rooms (storage rooms, bathrooms, baths and toilets) the recommended width of the canvas is 600 mm.
• For kitchens the minimum is 700 mm.
• For living rooms, at least 800 mm is recommended.

SNiP has recommendations for minimum door sizes

Of course, you can increase the size of interior doors if the doorway allows. Reduce at your own discretion. But the narrowest door leaf that can be found on sale is 550 cm, and even then it is inconvenient for obese people. In the kitchen and room where gas equipment may be located, the width of doorways is dictated and controlled by the fire safety service. So it won't be possible to do it anymore. Wider is possible.

As for residential premises, openings can also be made for double doors. That is, up to the maximum permitted in GOST 1.5 meters. There may be wider ones, but this is no longer standard. In a wide opening you can install not only conventional swing models, but also sliding or folding ones. But large and wide doors look good in large areas. So the recommended sizes of interior doors were chosen for a reason. They took into account the not too large rooms in our homes.