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How much headroom is required above the garage door ?

There are different lift types for commercial or industrial doors. When we talk about a ?Standard? lift movement, here are headroom requirements:

Type	Radius: 12 in.	Radius: 15 in.
2 in. Commercial Door widths: 8 to 12 ft.	12 in.	n.a.
2 in. Commercial Door widths over than 12 ft.	13.5 in.	15 in.
3 in. Industrial	n.d.	15 in.

Note : if you use a Trolley type operator, add 2.5 in.
IMPORTANT : do not use a « Standard » lift movement if you have 2 ft. headroom & over. Use a ?High Lift? movement.

For Low Headroom applications, the minimum headroom requirement is this following.

Type	Low Headroom Rear installation	Low Headroom Front installation
2 in. Commercial Door widths: 8 to 12 ft.	4 in.	8 in.
2 in. Commercial Door widths over than 12 ft.	4 in.	10 in.
3 in Industrial	11 in.	13 in.

Note : if you use a Trolley type operator, add 2.5 in.

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