Standard Size for Exterior Doors The standard size for an exterior door is 80 inches by 36 inches which is 6 ft, 8 inches by 3 ft. 96 inches or 8 ft. is now very common for newer homes and stock exterior doors are also commonly available in 30 and 32-inch widths.
So the best standard exterior door sizes are in width from 36 inches to 42 inches and for double doors they are from 72 inches to 84 inches. The height of these entryways are typically 80 inches but can be as much as 84 inches to even 96 inches.
Exterior Doors MUST have one of these!
DIY Exterior door – part 1: Rough and Layout
How to Cut Down a Door | Height and Width Adjustments
Frequently Asked Questions
How big does a front door need to be in the UK?
UK building regulations set a requirement for the minimum width and height of the entryway to your home – but as long as the main door to the property either meets or exceeds that requirement, then it can be any size at all. Standard external door sizes include: Widths of 27, 30, 33 and 36 inches.