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AMERICAN DOOR
Sectional Doors

Basic Terms



Window
Glazed section with various types of glass or clear acrylic to allow for light and visibility.

Sections
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 door via cable winding on drums.

Extension
Extends along both horizontal tracks

Rear Hanger Track

Track
Provides a guide for section to raise or lower door.

Track Types:
Standard
Low Headroom
High Lift
Vertical Lift

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.

Track Types

Critical Dimensions

 

Construction and Insulation

Insulated
2-Layer Steel

Insulated
3-Layer Steel

Non-Insulated Steel

Full View
Aluminum

Specialty
Applications

 


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