How To Measure and
Hang Interior Doors?

Step # 1

Before you start, check to make sure that the rough opening is 2" wider than the door width and 2" higher than the door height. This will allow you to shim and square the door frame easily. The recommended wooden door casing will cover the gap between the rough opening and the wooden door frame.

Rough Openings
Door Dimensions
Width
Height
18" x 80"
20"
82"
20" x 80"
22"
82"
22" x 80"
24"
82"
24" x 80"
26"
82"
26" x 80"
28"
82"
28" x 80"
30"
82"
30" x 80"
32"
82"
32" x 80"
34"
82"
34" x 80"
36"
82"
36" x 80"
38"
82"

Step #2

Place the door frame jamb components on the floor. Remove the door stop from the lock-side jamb. Confirm that the strike mortise on the lock-side jamb is correct for the door swing you have determined. Screw the header to the side jambs using the screws supplied.

Step #3

Position the assembled frame into the rough opening double-checking that you have the correct door swing. Using a 2 1/2” finishing nail, tack the hinge-side frame in the place at the top of the jamb. (Please note that if your opening allowance is off standard, you may need to trim the bottom of the jambs slightly.)

Step #4

Install the door onto the hinges and insert the hinge pins. With a level, adjust the frame so that it is exactly vertical and tack a second nail at the bottom of the hinge jamb. Swing the door carefully to obtain the desired 1/8” gap between the door and frame.

Step #5

Once the door is swinging smoothly, shim and nail the perimeter of the frame with 2 1/2” finishing nails. Nail through shims into rough opening jack studs. Install the door stop on the lock-side jamb when the door is in the closed position.