Exterior Door Rough Opening Sizes

Framing rough opening sizes are really quite simple.

Exterior door rough opening sizes.

Inswing rough opening unit dimension f f l r l r viewed from the exterior hand designations f l r fixed panel left. The rough opening size is the construction size with the side lumber studs and header. Just add 2 to the width of the actual door size. Use shims and or caulk to seal gaps between wall and frame.

For example let s say we want to frame a 6 8 x 3 0 front entry door. All exterior doors should have a deadbolt lock to increase security. You should add 2 1 2 to the height of the actual door. In other words the before any door is installed entrance area has to be larger than the size of the pre hung door.

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. The required dimensions to fit a pre hung door including frame and slab jamb size. Getting the rough opening size right the first time will save you from frustration when installing your doors.

Therefore the rough opening would be 82 1 2 tall by 38 1 2 wide. You can also order a custom size pre hung door. Of frame is 40 x 86 as the frame face is 2 around all 3 sides. Outswing brickmould dim.

These doors should be installed by a knowledgeable pro because the rough in opening in the wall will have to be enlarged. For m e u add actual unit dimension to door rough opening width for total rough opening width. The rough opening should be one inch wider than the frame and 3 4 of an inch higher than the door. Should be the dept of the frame not the width covering the sheeting or siding and wall stud.

The rough opening for a 36 inch pre hung door is is 38 5 inches by 82 inches. Frames that butt wall block or exterior wood stud a opening width 4 1 2 b opening height 2 1 4 the rough opening would be 40 1 2 x 86 1 4 for a 3 0 x 7 0 door frame. For the 36 x 80 exterior doors this rough opening will need to be 38 inches by 82 1 8 inches. A good deadbolt lock extends at least one inch beyond the edge of the door.