 |
Window Lite
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
extend along both horizontal tracks
|
 |
Rear
Track Hanger
|
 |
Track
Provides a guide for section to raise or lower door.
|
Track
Types:
Standard
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. |
