- Usually Ships 4 to 7 Business Days
STRAIGHT DOOR ARM 178B34
- Usually Ships 4 to 7 Business Days
This is a Straight Door Arm Replacement Kit. For use with various LiftMaster and Chamberlain
Garage Door Openers. The straight arm is commonly paired with the
curved door arm. Check the manual or replacement parts diagram for
specific part information before ordering to ensure compatibility.