Chamberlain 108D78 Garage Door Opener Light Lens Genuine Original Equipment Manufacturer (OEM) Part 108D78 Lens Cover is for the Liftmaster DC Belt and Screw drive operators Compatible with LiftMaster DC Belt Drive garage door openers models 2500, 2500B, 2500D, and 3500. Compatible with LiftMaster Screw Drive garage door openers models 2110, 2220, 3110, and 3220. Genuine Liftmaster replacement part