Doors Install and Repair - Buyers Guide

Commercial Door Terminology

Backset: Explains the distance from the edge of the door to the center of the drilled hole.

Book Size: The height and width of a door before prefitting.

Chalk: Colored chalks used for marking defects requiring repair on doors.

Chicken Tracks: Expression referring to scars caused by air routes or vines, resembling a chicken's footprint.

Deadbolt: Locking mechanism mostly used for entrance doors.

Edge Band: Strip along the outside edges of a door.

Finials: Decorative tips at the top and bottom of hinges.

Gap: Open splits in the inner plies.

Hinges: Metal objects that attach the commercial door to the jamb.

Patches: Matching wood pieces inserted into the door face.

Rail Bottom: Bottom cross or horizontal piece of a door.

Rail Top: Top cross or horizontal piece of a commercial door.

Satin Brass (or US4): A glass finish that is not shiny.

Show-Through: Irregular surfaces showing through on a wood flush door.

Standard Door: According to the industry practice, a standard door has book size width and height.

Types: The selection of doors including casement doors, entrance doors, French doors, louvers doors, interior passage doors, bi-fold and side lights, screens doors, patio sliding and swinging doors, and specialty doors.

Cup: Curvature along the width of a door.

Twist: Refers to a deviation where one or two corners of a door are out of plane.

Wood Flush Door: Refers to a variety of door types based on wood, consisting of core, stiles and rails, or two-face panels.

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