178B34 Liftmaster/Chamberlain Straight Door Arm

Replace a damaged residential garage door opener straight arm with the LiftMaster/Chamberlain 178B34 straight door arm from Garage Door Supply Company. A straight arm and curved arm connect the garage door to the garage door opener trolley. The Chamberlain/LiftMaster 178B34 straight arm is compatible with most LiftMaster residential garage door operators. Check your manual, or call our LiftMaster pros, to confirm compatibility.

Product Highlights:

• 178B34
• Compatible with most LiftMaster operators
• Confirm compatibility with manual