The main difference between garage door opener models is how the motor moves the trolley.
Dual track garage door opener.
Standard garage door openers have a similar design.
A motor drives a trolley or carriage along a rail.
Reduces headroom for standard and ez set extension spring systems to 4 1 2 in.
Reduces headroom for ez set torsion spring system to 9 1 2 in.
On the other hand if there is only 4 in.
Maximum garage door height.
121 mm to 12 in.
This very common garage door track option uses up even less headroom space than a 12 radius track.
Often referred to as dual track it is best recognized by a second horizontal track.
1 2 horsepower garage door openers work well with standard aluminum doors in a residential garage.
51 mm to standard lift movements.
Before you purchase a new garage door opener consider these important factors.
Garage door size and frequency of use.
304 mm available it is best to use a dual track system designed for low headroom.
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.
Works on 12 in.
Ideal door overhead garage door double track low headroom kit.
This second track is installed above the horizontal section that is attached to the curve from the vertical track section.
When equipping a garage door with an electric door opener add 2 in.
In order to install torsion spring hardware we recommend a clearance of 12 in.