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Window Lite
Glazed section with various types of glass or clear acrylic to allow for light and visibility.
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Sections
Steel panels reinforced with stiles interconnected with hinges and rollers.
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Bottom Bracket
A structured support which provides for attachment of lifting cables.
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Cable Drum
Grooved drums on the torsion spring shaft that lifting cables wind around when door is opening.
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Torsion Springs
Provides the means to raise and lower the door via cable winding on drums.
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Extension
extend along both horizontal tracks
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Rear Track Hanger
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Track
Provides a guide for section to raise or lower door.
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Track Types:
Standard
Low Headroom
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Track Components:
Vertical Track: on either side of opening.
Horizontal Track: attached to ceiling.
Radius: curved track |
Standard Heights:
7 feet high - 4 sections high
8 feet high - 5 sections high |
Gauge = thickness of steel
Lower is better. 24 gauge is thicker than 25 gauge. |
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| Garage Measurements |
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Headroom Chart
4-1/2'–10" – low headroom track
10" – standard track/extension spring
12" – standard track/torsion spring
14" or more – required for operator |
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