Standard interior jambs on prehung doors measure 4 9/16 inches, but.

Measure for prehung door. Measure exterior door slab 2. Remove interior moulding that surrounds the old door (top and sides). Measure the jamb (hump to hump) (measure the thickness part of the jamb) :

The quick steps below can help you size the exterior door the right way. Make sure all surfaces are. This jamb is the part of the door frame that supports the door with hinges and installs into the wall.

Step 4 measure the height of the rough opening. The measurement should run from the floor to the top of the rough opening. Prepare your rough door opening for installation.

Figure out the thickness of the door. 35 1/8 2 add 2 1/2 (frames generally. How to measure exterior door for replacement things you will need:

2/0 door = 2/2 r.o. Enter the correct measurement in the worksheet on the right. Measure the size of the door.

Be sure to measure the door width from the backside, the side that opens in, because this side. All measurements should be taken in inches. Figure out the thickness of the door.