Multi Code 1-Button Remote Control Transmitter 3089 Liftmaster 2 7/8" height (adjustable up

2 7/8" height (adjustable up to 3 3/4" apprx)

Confirm you have both pieces: one labeled Right and one labeled Left

For extension spring doors

High impact ABS black plastic

Multi Code 1-Button Remote Control Transmitter 3089 Liftmaster 2 7/8" height (adjustable upMulti Code 1 Button Remote Control Transmitter 3089 Single button transmitter (remote control) for garage door opener models using Multi Code 300 Mhz receivers. Old part numbers 1089 3089 3070 3060 To determine compatibility with your garage door opener, please look for a combination of the following features: Gray external radio receiver box present on back of garage door opener powerhead (motor mounted to ceiling of garage) to see what the receiver