The trolley is connected to the garage door and as the trolley moves it pulls the door open or pushes it closed.
2 vs 3 garage door.
These 3 layer doors have a steel layer on the outside insulation in the center and a steel layer on the inside thus the 3 layer designation.
The gold standard of garage doors is the triple layer.
The main difference between garage door opener models is how the motor moves the trolley.
If you want maximum energy efficiency soundproofing and structural integrity and have extra room in the budget this is the door for you.
A motor drives a trolley or carriage along a rail.
Standard garage door openers have a similar design.
The horsepower needed for your garage door opener is dependent on whether or not you want a long lasting opener verses replacing it every few cycles or the size of the door.
It handles lightweight single garage doors without being too powerful and capable of lifting heavy garage doors with no problem.
For example if you would like to lift a double garage door one might suggest using a 1 2 horsepower because the door is heavier and larger.
It sandwiches a layer of insulation between two pieces of steel wood or fiberglass.
Online pricing and free estimate.
Garage door corporation tries to educate its customers as to why a 3 layer insulated garage door is the better alternative for this application.
1 2 hp openers have proven to be the more versatile option of them all.