Definitions of Terms under Alphabet H
Hinge Stile

The full-length vertical pane of a door, at the side or edge of the door, which fastens to its frame with hinges.

Hinge Sizes

The distance across the hinge, measured parallel to the hinge pin.


An assembly of metal plates and a cylindrical metal pin, which when fastened to a door edge and to a doorframe, allow the door to swing or rotate in its frame.

Header Clearance

The clearance between the top edge of the door and the head jamb.

Head, Head Jamb

The horizontal top frame member of a door assembly.

Head Bolt

A steel pin housed in a door top edge or astragal. See foot bolt.


A term, which describes or determines the direction of swing of a door when opening.