Frames & Jambs

What Is Head Jamb?

The horizontal jamb member across the top of a door opening.

The head jamb is the horizontal portion of a door jamb at the top of the opening. It works with the side jambs to define the framed opening and provide the closing surface for the door.

Buying Considerations

Check head jamb width, wall thickness, door height, stop location, and whether the jamb includes extension or casing components.

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