This model features a 1/2 horsepower motor that is perfect for lifting most single or double garage doors, and it utilizes a belt drive process, that's noted for currently being quieter than the traditional chain drive techniques. When the door doesn't open up or close appropriately, repeat the adjustment course https://youtu.be/wSkWTAdm-Gg?si=pR5EXdjVuNYjtHN7