A motor drives a trolley or carriage along a rail.
Dual track garage door opener.
Reduces headroom for standard and ez set extension spring systems to 4 1 2 in.
This very common garage door track option uses up even less headroom space than a 12 radius track.
1 2 horsepower garage door openers work well with standard aluminum doors in a residential garage.
Works on 12 in.
304 mm available it is best to use a dual track system designed for low headroom.
Maximum garage door height.
On the other hand if there is only 4 in.
Before you purchase a new garage door opener consider these important factors.
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The trolley is connected to the garage door and as the trolley moves it pulls the door open or pushes it closed.
51 mm to standard lift movements.
Ideal door overhead garage door double track low headroom kit.
Reduces headroom for ez set torsion spring system to 9 1 2 in.
In order to install torsion spring hardware we recommend a clearance of 12 in.
The main difference between garage door opener models is how the motor moves the trolley.
Garage door parts accessories.
This second track is installed above the horizontal section that is attached to the curve from the vertical track section.
Standard garage door openers have a similar design.
If the garage is the main entrance to your home or you have a one piece door or a heavy oversized garage door you ll probably need one with the lifting power of a 3 4 to 1.
121 mm to 12 in.