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3707CH is a One-Piece 7' (2.1 m) Rail Assembly. This complete rail is used to install various LiftMaster® and Chamberlain® Chain Drive Garage Door Openers. Check the manual for specific rail kit information before ordering to ensure compatibility.
Also known as: G3707CH, MR3707CHC, 3707PL, 3707CHC, MRE3707CH, MR3707CH, 012381137077