The curved portion of the track, which allows the door to move from vertical to horizontal (and vice versa). The curve is measured in inches, thus determining headroom requirements. See Headroom.

A measure of circular area. In profile wrapping, it defines the sharpness of a curve or of an inside or outside corner.

1. Another name for a transition. 2. Refers to the amount of curve in a transition. The radius varies in size and is specific to an obstacle and its height.

The measurement of a curved surface as applied mainly to lenses.

Area on an off round tin where the metal bends to form a “curved corner”; on a cover it is the area where the top surface bends or tapers downward to for the skirt.

This is a bend we can add to your down tubes or backbone to gently curve them inward or upward. This process adds flowing lines and curves to your frame.

The radius is the curved part of a track between the vertical and horizontal pieces.