For example let s say we want to frame a 6 8 x 3 0 front entry door.
Interior door door rough opening chart.
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You should add 2 1 2 to the height of the actual door.
Dimensional data o 2 2017 u1 revised arch 1 unit and rough opening sizing la ar al ra viewed from the exterior hand designations a l r astragal passive left hand right hand inswing.
Door widths which are considered standard usually come in sizes of 2 6 30 2 8 32 and 3 0 36.
Just add 2 to the width of the actual door size.
Refer to the charts below to determine what size of door you will need.
Also if you re planning on doing it yourself these rough measurements should help to make the installation a bit easier.
Getting the rough opening size right the first time will save you from frustration when installing your doors.
This will give you room to space the door frame off of the sub floor.
The 6 8 stands for 6 8 tall and the 3 0 stands for 3 0 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.
While a standard door height is 80 finished opening.
For reference standard interior door widths range from 24 36 finished opening.
For m e u add actual unit dimension to door rough opening width for total rough opening width.
For fire rated openings drywall must extend at least 1 2 into frame.
The first is for exterior doors and the second chart is for interior doors.
Framing rough opening sizes are really quite simple.
Standard door rough openings.