Liftmaster MODEL 480LM RJO 3800 Alternate Mounting/Extension Kit

The LiftMaster model 480LM Alternate Mounting/Extension Kit, available is designed exclusively for use with residential Jackshaft openers including the LiftMaster 3900, 3800 and 8500 models. The extension kit is available from North Shore Commercial Door and allows the opener to be lowered on the wall. The operator may need to be lowered due to obstructions, low ceilings and other installation difficulties. A t-bracket is included to raise the operator away from the wall to accommodate the kit pieces. The Alternate Mounting/Extension Kit does not increase operation noise.

The LiftMaster 480LM extension kit comes with easy and quick installation instructions. The 480LM alternate assembly allows the garage door operator to be lowered a total of 5.9 inches from the top of the garage door. The kit contains everything needed to set up the extension unit, including a chain, a t-bracket, a 1-1/4-inch sprocket with collar and screws, a 1-inch sprocket with collar and screws and a cover assembly.

• Exclusively for use with Residential Jackshaft Opener models 3900, 3800 and 8500 models
• Enables the opener to be lowered 5.9 inches
• Quick installation