The LiftMaster G1707 7‑Foot Chain Drive Rail Assembly is a one-piece rail designed for use with compatible LiftMaster and Chamberlain chain drive garage door openers, providing smooth, reliable operation with 7 ft (2.1 m) doors. Always consult your opener’s manual for compatibility before ordering to ensure proper fit and safe performance.

• One-piece 7 ft chain drive rail assembly suitable for residential garage doors up to 7 ft tall

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

• Also known by alternate part numbers: MR1707AC, 1707PL, 1707AC, 012381170777, 1707LM, MR1707LM

• Compatible with LiftMaster opener models 84602 and 8365W‑267

• For more information visit Manufacturer's Website