Standard exterior door dimensions

front door image by Derek Abbott from

Wood, steel and fibreglass are common materials for exterior house doors. The doors must close securely, open smoothly, and serve as a barrier to weather extremes. Exterior doors are available in stock or custom sizes.

Standard Doors

The standard size for an exterior door is 80 inches (6 feet, 8 inches) by 36 inches (3 feet). Stock exterior doors are also commonly available in 30 and 32-inch widths. The standard door thickness is 1 and ¾ inch. Some door manufacturers carry stock doors in 7-foot and 8-foot heights and door widths from 24 inches to 42 inches.

Patio Doors

Patio doors are constructed of glass with a frame. The standard size is 6 feet, 8 inches tall and 6 feet wide. However, patio doors are routinely available in 6-foot, 11-inch and 8-foot heights.


Custom doors are available in many sizes. Doors often have a core of foam insulation and can be left- or right-handed, depending on the location of the doorknob. Doors are purchased as a slab (the door only) or pre-hung, a door mounted on hinges and attached to a door frame.

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