Garage Door Glossary

Garage doors are far more complex than your normal household door.  Here we make sense of some of the industry terminology you might hear, and what they mean:

AstrangalThis is a weather seal which covers the bottom of the garage door, guarding against drafts, rain and bugs.
Cable DrumsDesigned to collect and dispense the cables neatly and without tangling. They are positioned on the torsion springs.
Cable Safety DeviceA safety measure which prevents the garage door from falling if the cable breaks.
CurtainThe face of the door.
CycleA term used to describe the lifespan of torsion spring doors, for example 100,000 cycles. One cycle means: fully closed > open > fully closed again.
GalvanizingA method used for coating steel garage doors to prevent rusting.
GaugeA measure of how thick or thin a steel door is. A higher gauge means thinner steel.
Guide RailThis rail runs either side of roller door frames to help the door stay straight for a secure close.
JambThe vertical framing of the door opening.
Jamb SealThe weather seal that runs alongside the jamb.
Top Header SealThe weather seal that runs along the top side of the garage door.
Torsion SpringsHelp to raise and lower the garage door
Torsion Springs (Counterbalance assembly)Ensures that the door weight is evenly distributed when opening and closing.
TrackThe path which guides the door when opening and closing.
RadiusThe curved part of the track where vertical turns to horizontal along the ceiling.
RollersThe wheels which travel along the tracks when the door opens and closes.
WindloadThe force of the wind as it hits the garage door in a closed position.

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