A. MEASURING FOR HEIGHT & WIDTH
Measure existing door width and height in millimetres.
This determines the size of door needed.
B. MEASURING FOR BACKROOM
Measure area labeled “backroom”.
This distance is measured from the garage door opening and toward the back wall of the garage.
C. MEASURING FOR HEADROOM
Measure area labeled “headroom”.
This distance is between the top of the door opening and the ceiling (or first obstruction, e.g., light fixture, beam, etc).
D. MEASURING FOR SIDEROOM
Measure area from edge of opening to the side wall.
Right and Left side.