Screw Drive: These openers are connected to the trolley, using a long screw-type rod fitted inside the track. Although they are weather resistant and noisy, they are low-cost and affordable.
Chain Driven: Using a bicycle-style chain, which is connected to a trolley, these openers are extremely reliable and are quite common to be installed indoors.
Belt Driven: These openers are similar to the Chain Driven ones mentioned earlier; these are reliable and quieter compared to the aforementioned ones.
Jackshaft: These openers are wall-mounted at the end side of the torsion bar; they are known for being almost noiseless, elegant and a perfect choice for most garages, especially ones which are smaller in size.