If your door opening is an unusual size simply take your measurements to a home depot store near you and an associate will help you choose the right door for your home.
Front door height and width.
The standard thickness for interior doors is 40 mm.
The height for all interior doors must be minimum 2040mm and the standard width for interior doors is 620 720 770 820 870 or 920 mm.
Entry doors are usually 36 inches wide.
Exterior doors often are the most visible parts of a house and like interior doors are available in standard sizes.
When planning renovation or building a new door have this measures in mind.
80 inches 6 feet 8 inches thickness.
The exterior siding wall cladding should be approximately inch wider and inch taller than the door installation fin door width measurements use the outermost edges of jamb installation fin door height measurements use uppermost edge of the head fin to door frame sill.
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.
The height for all passage doors must be a minimum of 80 inches and the standard width sizes for interior doors are 24 28 30 32 and 36.
They range in width from 2 feet to more than 3 feet and in height from 6 feet.