Final answer:
Door heads and jambs are generally made of 3/4" thick wood stock.
Step-by-step explanation:
Door heads and jambs are generally made of 3/4" thick wood stock. This thickness is commonly used in the construction of doors to provide stability and durability.
The head jamb is the topmost part of the door jamb. It is the horizontal part of the door frame that runs along the top of the door, connecting the two side jambs. If you open any door in your home and look up, the board(s) that you see are the head jamb.
A door jamb is an individual section of a door frame. Two side jambs make up the vertical components of the door frame and the head jamb is the top horizontal component. Together, the jambs (along with mullion) comprise the door frame.
The head is the part of the door frame that sits horizontally to form the top of the frame. Legs/Jambs – These are the terms commonly used to refer to the vertical components that form the sides of the door frame.