How much headroom is required above a commercial 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. |
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2 in. Commercial
Door widths: 8 to 12 ft. | 12 in. | n.a. |
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2 in. Commercial
Door widths over than 12 ft. | 13.5 in. | 15 in. |
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3 in. Industrial | n.d. | 15 in. |
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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 |
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2 in. Commercial
Door widths: 8 to 12 ft. | 4 in. | 8 in. |
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2 in. Commercial
Door widths over than 12 ft. | 4 in. | 10 in. |
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| 3 in Industrial | 11 in. | 13 in. |
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Note : if you use a Trolley type operator, add 2.5 in.