Instructions / Assembly

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4. Locate the supports / joists above the ceiling (solid wood supports) where
The Thunder Mount channel will be attached.
*(It’s highly recommended to mount channels horizontal with the door).
Isolator Washers
Thunder Mount Mounting above the ceiling continued.
The cradles attach to the channel in one inch increments anywhere along the
channel to easily center the opener. Thunder’s 30 degree of adjustability helps
when you need it. Attach the Cradles at that spot.