- framing – In general, the framing members that make up a window or door opening consisting of the king studs,trimmer studs and header. When describing the individual components of a window or door opening, “jamb” usually refers to the king and trimmer studs.
- window and door units – The vertical or side frame of a window or door unit is called the jamb. The top frame is called the head or head jamb and the bottom frame is called the sill on window units and the threshold on door units.
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