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.

You should add 2 1 2 to the height of the actual door. Getting the rough opening size right the first time will save you from frustration when installing your doors. For example let s say we want to frame a 6 8 x 3 0 front entry door. Framing rough opening sizes are really quite simple.

Standard door rough openings. For reference standard interior door widths range from 24 36 finished opening. The height of common doors is 6 feet 8 inches. If you re going to frame a rough opening for a door then you ll need to know the unit size.

Therefore the rough opening would be 82 1 2 tall by 38 1 2 wide. 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. For fire rated openings drywall must extend at least 1 2 into frame. Just add 2 to the width of the actual door size.

Add 2 to 2 1 2 inch to the measurement of the door s width to determine the total width of the rough opening. Refer to the charts below to determine what size of door you will need. The difference between a rough opening and finished opening is usually 2 3 inches. While a standard door height is 80 finished opening.

This takes into account the thickness of a standard 3 4 inch doorjamb on each side. If you have questions give us a call at 888 458 5911.