Interior Door Rough Opening Size Chart

The additional room allows for a 3 4 inch top jamb a shim.

Interior door rough opening size chart.

This takes into account the thickness of a standard 3 4 inch doorjamb on each side. The height of common doors is 6 feet 8 inches. Just add 2 to the width of the actual door size. For reference standard interior door widths range from 24 36 finished opening.

You should add 2 1 2 to the height of the actual door. For example let s say we want to frame a 6 8 x 3 0 front entry door. This will give you room to space the door frame off of the sub floor. If you re going to frame a rough opening for a door then you ll need to know the unit size.

Interior knockdown frames that wrap wall a opening width 2 b opening height 1 the rough opening would be 38 x 85 for a 3 0 x 7 0 door frame. The difference between a rough opening and finished opening is usually 2 3 inches. While a standard door height is 80 finished opening. Standard door rough openings.

Therefore the rough opening would be 82 1 2 tall by 38 1 2 wide. Add 2 to 2 1 2 inch to the measurement of the door s width to determine the total width of the rough opening. Framing rough opening sizes are really quite simple. The 6 8 stands for 6 8 tall and the 3 0 stands for 3 0 wide.

Refer to the charts below to determine what size of door you will need. If you have questions give us a call at 888 458 5911.