Just add 2 to the width of the actual door size.
Entry door frame sizes.
You just need to find the height and width of the door using a measuring tool.
Some door manufacturers sell doors in 7ft 8ft heights and door widths from 24 inches to 42 inches.
Determining the size of your door is as simple as taking a few measurements and doing some basic math.
While a door width of 36 inches is oversized for an interior door it s the standard size for front doors the standard height remains the same however.
How to measure the size of a door.
Is now very common for newer homes and stock exterior doors are also commonly available in 30 and 32 inch widths.
Entry doors are available in single and double door configurations with additional options like matching sidelights and transoms.
96 inches or 8 ft.
These options can impact the overall size of your entry door.
Entry doors are usually 36 inches wide.
Framing rough opening sizes are really quite simple.
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.
Once you have measured.
This will give you room to space the door frame off of the sub floor.
You should add 2 1 2 to the height of the actual door.
Now all you need to know is how to properly frame your door rough opening.
Doors can be as narrow as 30 inches and as tall as 96 inches and thickness can depend on the door material.