back jamb

back jamb

[′bak ‚jam]
(building construction)

back lining

1. A thin wood strip which lines a window casing, next to the wall and opposite the pulley stile, and provides a smooth surface for the working of the weighted sash; also called back boxing or a back jamb.
2. That piece of framing forming the back recess for boxing shutters.
References in periodicals archive ?
Shim the bottom if necessary and tack the door temporarily to the back jamb with a bent 16d common nail.
Use lag bolts to secure the vertical tracks to the back jambs.