GLOSSARY-J

 

JAL AWNING.

(Jalousie window) (Awning window) – Window with several out-swinging, awning-type windows that pivot near the top of the glass and operate in unison.

 

JAMB.

Vertical members at the side of the window or door frame; also refers to the horizontal member at the top of the window or door frame, as in Head Jamb and Window Jamb.

 

JAMB EXTENDER.

See: Extension jamb.