Genuine LiftMaster MA040-3 arm end caps for the Mega Arm barrier gate operators, 3 inch, supplied as a pair.
Fitment: LiftMaster MADCBB, MATDCBB, MASDCBB and MASTDCBB fitted with a 3 inch barrier arm. The 2 inch arm takes MA040 — measure the arm before ordering.
Replace when the caps are cracked, faded or missing. They keep water out of the arm tube.
