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Garage Door Basics

Window Lite
Glazed section with various types of glass or clear acrylic to allow for light and visibility.
Steel panels reinforced with stiles interconnected with hinges and rollers.
Bottom Bracket
A structured support which provides for attachment of lifting cables.
Cable Drum
Grooved drums on the torsion spring shaft that lifting cables wind around when door is opening.
Torsion Springs
Provides the means to raise and lower the garage door via cable winding on drums.
extend along both horizontal tracks
Rear Track Hanger
Provides a guide for section to raise or lower the garage door.
Track Types:
Low Headroom
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.

Headquarters: 1/F, No.3B, No.99 Feixia Industry Park, No.2535 Gudai Rd, 201100Shanghai, China
Tel:86-21-54888982 Fax:86-21-54888926
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