This model features a 1/2 horsepower motor which is perfect for lifting most single or double garage doors, and it works by using a belt drive method, that is known for staying quieter than the normal chain drive units. On the list of standout attributes of your Chamberlain Whisper Drive https://youtu.be/wSkWTAdm-Gg?si=pR5EXdjVuNYjtHN7