What is a Side Jamb?
Definition of Side Jamb in Construction The sides of a window or door unit. The jamb is a descriptive term that means the sides of an opening or the sides of any assembly that should be installed within the opening. The top of the opening is known as the head and the bottom the sill. A side jamb is basically a jamb and the reference to side is a duplication of the intent. Although commonly used for windows and doors, the term jamb is a basic construction descriptive term that refers to the side of almost any opening. I have heard construction personnel describe the side of a opening in a concrete wall as the jamb side.