Domestic Doors
In the UK, standard internal door sizes typically range from
Internal
24 inch - 610 x 1981 mm
27 inch - 686 x 1981 mm
30 inch - 762 x 1981 mm
33 inch - 838 x 1981 mm
External
30 inch - 762 x 1981 mm
33 inch - 838 x 1981 mm
36 inch - 914 x 1981 mm
Doors
Door standards and specifications
In the UK, standard internal door sizes typically range from 1981mm x 610mm to 1981mm x 838mm, while external door sizes are usually around 1981mm x 762mm to 1981mm x 914mm. These dimensions ensure compatibility with most door frames and are widely available for ease of installation and replacement.
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