I have a Chamberlain Liftmaster Professional 1/2 HP Garage Door Opener. It needs minor repairs to work like new.

　　With its rugged reliability and exceptional all-around performance, the 3265 1/2 HP Chain Drive Garage Door Opener is the perfect choice if you want enhanced style, reliability, and the performance attributes of our best-selling drive system ever. The 1/2 HP motor is combined with the industrial-duty chain drive to provide steady performance and lifting power.