Uk standard door sizes.
Standard external door dimensions uk.
On this page we explain the standard internal door height and standard internal door size door width.
Typically fire doors sizes are 27 x78 30 x78 and 22 x78 but may also be available in the smaller size of 24 x78 metric fire doors may also be available with standard sizes ranging from 626mm x 2040mm and 726mm x 2040mm to 626mm x 2040mm and 926mm x 2040mm.
Measuring for a pre hung exterior door can be tricky.
All external doors are usually supplied 44mm thick.
Internal standard door sizing uk.
1981 x 457 533 x 35mm door sizing usually most popular for wardrobe or cupboard door use.
The main difference is seen in the thickness of external doors.
1981 x 457 533 x 35mm door sizes tend to be most popular for use as cupboard or wardrobe doors.
While a door width of 36 inches is oversized for an interior door it s the standard size for front doors the standard height remains the same however.
As external doors need to be more sturdy they are usually thicker with 44mm 1 3 4 being the most common thickness in domestic settings.
Jb kind doors offer a core selection of the most common door sizes from stock and if you have a non standard size requirement bespoke sizes can be ordered for many of our door ranges.
The standard heights and widths of external doors are often comparable to standard internal door sizes.
At bso we provide a core range of the most prolific door sizes from stock.
If you want something that is just slightly smaller than the standard 3 foot exterior doors then trimming down a standard sized door to fit is a good option.
It can take 10 12 weeks to get an extra tall or extra wide door made depending on the size and the type of material.
Adjusting the size of an external door.
The most common standard door sizes for both imperial and metric external doors are 30 x78 32 x80 33 x78 34 x82 36 x84.
Extra wide internal doors many people nowadays have wider than standard openings which means they will require non standard internal doors this can sometimes be due to disability access which means doors are wider than 838mm or it may be that you have an older property with a slightly odd size door opening.
If your slab door is more than 25 years old use a pre hung door to ensure a sealed frame.
Pre hung doors include both the door and the frame that supports the door while slab doors include just the door alone.
External doors size guide.