Door Basics

by and Rich Franken
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Mortise: Machining and reinforcing a preparation into door or frame for attachment of hardware.

Net Dimensions: The finished sizes of the door. For example, a 3070 Curries manufactured door is 35-13/16” x 83-1/4”.

Nominal Dimensions: The dimensions used to identify the door. For example, a 3070 door.

Opening Size: Size of frame opening measured between rabbets horizontally and between top rabbet and finished floor vertically.

Plumb: In vertical alignment.

Plumb Line: A string (line) that is attached to a weight to verify if an object, for our purposes a door or frame is in vertical alignment (plumb).

Rabbet: The offset formed in the frame to receive door. The rabbet is in front of the stop.

Sex Bolts: See Through Bolting.

Stop: Part of frame against which door closes.

Strike Jamb: The vertical member of frame prepared to accommodate the strike plate.

Strike Preparation: The portion of the frame modified to accept a strike plate.

Threshold: A raised surface positioned under the door when the door is closed and latched. A threshold can be manufactured of a variety of materials including metal, wood or stone.

Through Bolting: This method of installation uses Sex Bolts mounted onto the opposite face of the door. The object such as a door closer is mounted onto the other face of the door using bolts that thread through the door into the Sex Bolts.

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