Important - Follow the measuring instructions closely. Exact measurements are critical to installing and ensuring the correct fit and operation of your new door. Please provide measurements to the closest fraction of an inch.

Step #1
Measure the width and height of your door opening in feet and inches. This determines the size of door needed. The rough opening should be the same size as the door.

Step #2
Measure for left and right. This is the distance from the edge of the opening door space to the left or right wall or other obstruction.

Step #3
Measure the headroom area. This is the distance between the top of the finished door opening (“jamb header”) and the ceiling or underside of joists. 10" is required for the standard installation. If you have restricted headroom, special hardware is available. Additional headroom is required for installation of an automatic garage door opener.

NOTE: If door height extends above the opening, the headroom measurement should be adjusted accordingly.

Step #4
Measure the backroom, or depth area. This is the distance from the garage door wall opening to the back or rear wall of the garage, or to the point where the hardware or the automatic opener will extend. Door height plus 18" is required. Additional back room may be required for installation of an automatic garage door opener.

NOTE: Obstructions are defined as entry doors or other objects that will interfere with the garage door track or the operation of a garage door. The nearest obstruction may be something such as pipes, support beams, heating ducts, lighting, etc. Obstructions must be taken into consideration in the headroom, sideroom, and backroom measurements.