Door Rough Opening sizes and Charts

Getting the rough opening size right the first time, will save you from frustration, when installing your doors. Framing rough opening sizes are really quite simple.  Just add 2" to the width of the actual door size. You should add 2-1/2" to the height of the actual door. This will give you room to space the door frame off the sub-floor.  See door installation tips. Now all you need to know is- how to  Properly Frame Your Door Rough Opening.

So, if you have a bedroom door that is 30" wide (which is considered a 2/6 or 2'-6" door) just add 2" to the width and frame it 32" wide. The height is 80" (which is considered 6/8 or 6'-8") add 2-1/2" to the actual door height and frame it 82-1/2" high.

Rough Opening Chart: 

2/0 DOOR = 2/2 R.O.                                  
                                   
2/4 DOOR = 2/6 R.O.
                                  
2/6 DOOR = 2/8 R.O.
                                   
3/0 DOOR = 3/2 R.O.

* NOTE ALL R.O. WIDTHS ARE 2" WIDER AND 2-1/2" TALLER (82 1/2") HIGH