Liftmaster LA500DC Swing Gate Opener Primary Arm Only
LA500DC Primary Arm Only with Hardware LA500DC Primary Arm is a replacement arm for LA500 system.
It will move a gate that is either 18ft or weighing up to 1200 pounds. It will open up to 90 degrees in 15-17 seconds.
Before you purchase make sure that you need to the primary arm and not the secondary arm. The primary arm will not work as a secondary arm.