Reference Library

J

Jack Rafter
A rafter that spans the distance from the wall plate to a hip, or from a valley to a ridge.
Jalousie
A type of window consisting of a number of long, thin, hinged panels.
Jamb
The side and head lining of a doorway, window, or other opening.
Joist
A horizontal structural member, which supports the floor or ceiling system.
Junction Box
An electrical box used for wire splicing.