The LiftMaster G3708CH 8‑Foot Chain Drive Rail Assembly is a one-piece rail designed for use with compatible LiftMaster and Chamberlain chain drive garage door openers, ensuring smooth and reliable operation for 8 ft (2.4 m) doors.

• One-piece 8 ft chain drive rail assembly suitable for residential garage doors up to 8 ft tall

• Provides stable, dependable operation with compatible LiftMaster and Chamberlain chain drive openers

• Also known by alternate part numbers: MR3708CHC, 3708CH, 3708CHC, MR3708CH, MRE3708CH, 012381137084, 3708PL

• Compatible with LiftMaster opener models 87802 and 8587W

• For more information visit Manufacturer's Website