Originally meaning the vertical members of a framework, the phrase “jamb” has evolved to indicate the frame where the window or doorway is mounted.

Standard jamb width. Each exterior jamb has certain portions that will have the same size. For example, the kerf is 1/2” to accept the weatherstrip. Measure the window jamb's depth.

You may find that the measurements above are too large, or too small, for your opening. The standard jamb width is 4 5/8 inches. Here are the more standard jamb profiles.

The door jamb is the frame that installs in the wall and supports the door via hinges. Standard door width for interiors is 32 inches. You need to figure out if sheer ply plus finished material plus interior sheet rock.

This is the conventional hollow metal frame, meaning it is meant to be welded and is indeed. The thin part of the jamb is 3/4″. Welded hollow metal frame profiles and jamb depths.

We have created this video series to help educate our customers on all they need to know about purchasing a door online and everything that makes up a door.