| Garage Door Opener Trolley, Inner |
 This manufacturer-approved trolley (part number 37845R.S) is for garage door openers.Trolley 37845R.S connects the garage door arm to the rail and moves the garage door as the motor-driven chain or cable travels along the rail.Unplug the garage door opener before installing this part. Wear work gloves to protect your hands. Price: 21.62 |