Standard Exterior Door Sizes Rough Opening

Building Regulations diagram measurement of clear opening.

Standard exterior door sizes rough opening. Measure the width of the rough opening at the top middle and bottom. The exterior sidingwall cladding should be approximately ½ inch wider and ¼ 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. The required dimensions to fit a pre-hung door including frame and slab.

To get an accurate measurement you must multiply the doors width by 2 and then add 2. While a standard door height is 80 finished opening. The full width of the frame.

For the height simply add 2 12. The brick opening is measured from the exterior of the house and includes the exterior casing or trim. 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.

The rough opening for a 36-inch pre-hung door is is 385 inches by 82 inches. Presuming the door is a 36-inch wide door the dimensions of your opening should be 37½ inch wide by 81½ inch tall. Standard door sizes vary in width from 24 to 36 inches but most are typically 80 high.

So in the case of a 2040 x 920mm door the standard reveal size would be 2055 x 924mm. The approximate rough opening dimensions for a standard front door is 82 12 inches by 38 inches. The rough opening of a 48-inch bifold door is 82-inch 2082 mm higher and 50-inch 1270 mm wider.

For reference standard interior door widths range from 24-36 finished opening. In addition special sizes can sometimes be custom ordered. The frame extends beyond the panel and is installed into the rough opening.