Shop for Doors & Windows at The Home Depot. The SilentMax 3/4 HPc* DC Motor Belt Drive Garage Door Opener, Revolution Series, features quiet and smooth operation. 140-volt DC motor uses standard electrical connection and delivers 3/4 hp for operating heavy doors. The belt is reinforced with steel for durability, and lighting is directed to the rear of the garage where it is most needed. Genie Revolution Series operator allows for technology system upgrades.