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1/2 HP Chain Drive Garage Door Opener
If you have a o
ne-piece garage door
, do the following:
a. Open your door to the highest point of travel as shown. Measure the distance from the top of the door to the
floor. Subtract the actual height of the door. Add 8” to the remainder. For example:
91” = Distance from top of door at highest point of travel to floor
87” = Actual height of door
91” – 87” = 4” remainder
4” + 8” = 12”
d. Close the door and draw an intersecting horizontal line on the header wall at the determined height from
the top of the closed door.