Prime-Line 20 in. L 150 lb Garage Door Torsion Spring

Most doors, in recent years, have been supplied with torsion springs, located directly above the door and mounted to the header. Replacement will require the use of 2 winding rods (GD-52238) and a clear understanding of wire size and handing. Torsion spring Left hand 0.218″ X 1-3/4″ X 20″ Blue