Fire Door Sizes – How to Get it Right
Just like so many other “standards”, there are several “standard” door sizes in the UK – and as a result ensuring that you select the right one can be something of a challenge:
- 1981 x 457/533 x 35mm – this size is most popular for use as cupboard or wardrobe doors
- 1981 x 610/686 x 35mm – these are used where the wall space may be restricted and a smaller door is required
- 1981 x 762 x 35mm – often referred to as a 2’6” door – is the most common internal door size in England and Wales
- 1981 x 838 x 35mm – in most circumstances provides the required opening width for wheelchair access under the Part ‘M’ mobility requirements. (You may also hear this door size being referred to as a 2’9”)
Metric sized internal doors are becoming increasingly popular, and are now commonly used in Scotland and Europe. The main difference between these and the standard UK sizes above are an increased door height of 2040mm and door thickness of 40mm.
Common options are 2040 x 526/626/726/826/926 x 40mm.
Of course, many people still work in feet and inches, and if so here’s a useful conversion chart:
| HEIGHT & WIDTH | ||
| Metric (mm) | Imperial (inches) | Imperial (feet & inches) |
| 1981 x 457 | 78″ x 18″ | 6′6″ x 1′6″ |
| 1981 x 533 | 78″ x 21″ | 6′6″ x 1′9″ |
| 1981 x 610 | 78″ x 24″ | 6′6″ x 2′0″ |
| 1981 x 686 | 78″ x 27″ | 6′6″ x 2′3″ |
| 1981 x 711 | 78″ x 28″ | 6′6″ x 2′4″ |
| 1981 x 762 | 78″ x 30″ | 6′6″ x 2′6″ |
| 1981 x 838 | 78″ x 33″ | 6′6″ x 2′9″ |
| 1981 x 915 | 78″ x 36″ | 6′6″ x 3′0″ |
| 1981 x 1067 | 78″ x 42″ | 6′6″ x 3′6″ |
| 1981 x 1168 | 78″ x 46″ | 6′6″ x 3′10″ |
| 1981 x 1220 | 78″ x 48″ | 6′6″ x 4′0″ |
| 1981 x 1372 | 78″ x 54″ | 6′6″ x 4′6″ |
| 1981 x 1524 | 78″ x 60″ | 6′6″ x 5′0″ |
| 2032 x 813 | 80″ x 32″ | 6′8″ x 2′8″ |
| 2134 x 915 | 84″ x 36″ | 7′0″ x 3′0″ |
| 2040 x 526 | 80 1⁄4″ x 20 11⁄16″ | 6′8 1⁄4″ x 1′8 11⁄16″ |
| 2040 x 626 | 80 1⁄4″ x 24 5⁄8″ | 6′8 1⁄4″ x 2′0 5⁄8″ |
| 2040 x 726 | 80 1⁄4″ x 28 5⁄8″ | 6′8 1⁄4″ x 2′4 5⁄8″ |
| 2040 x 826 | 80 1⁄4″ x 32 1⁄2″ | 6′8 1⁄4″ x 2′8 1⁄2″ |
| 2040 x 926 | 80 1⁄4″ x 36 7⁄16″ | 6′8 1⁄4″ x 3′0 7⁄16″ |
All of these standard UK door sizes are usually available as a fire door equivalent, with the only difference being an increased door thickness. This is because extra core component materials are required in the construction of the door to achieve its fire rating.
So where might we need different fire door sizes?
Well, this is one of those “how long is a piece of string?” questions really, as within reason a fire door can be any size, standard or not.
So, in a standard domestic dwelling clearly the door will be quite small (probably one of the standards above) whereas, towards the other end of the scale, somewhere like a warehouse or concert hall or manufacturing facility will need something far bigger.
Enfield Doors can manufacture any bespoke sized fire door (within reason) or can supply uncut door cores for you to make your own fire doors (note that in this instance we couldn’t certify them).
We’re here to help
We have been manufacturing and installing fire doors for many years for numerous satisfied customers – and we can give you expert advice and guide you through all of the regulations and complications that you need to be aware of.
If you would like further information on our company please visit our home page or go directly to our contact page when we will respond as quickly as possible.
As always we’ll be delighted to help and advise you.
