8in Belt Drive Rail Assembly - G2778

The LiftMaster G2778 Belt Drive Rail Assembly is a high-quality, one-piece 8-foot (2.4m) rail system engineered to provide smooth, quiet, and efficient operation for a wide range of LiftMaster® and Chamberlain® belt-drive garage door openers. Designed with precision and durability in mind, this rail assembly serves as a critical structural component that guides the belt movement, ensuring consistent door travel and reducing vibration during opening and closing cycles.

Features:

• Manufactured as a single-piece rail, the G2778 offers superior rigidity compared to multi-piece rails, minimizing flex and improving long-term mechanical reliability.
• This rail is commonly used in installations requiring an 8-foot door height and is fully compatible with several LiftMaster operator models, including 87504-267, 84501, 8155W, 8355W, 87505R, 84504R, 6690L, and 6580L, among others.
• The assembly is also cross-referenced under part numbers such as MR2778BD, 2778BDC, 2778BD, and 012381227785, ensuring easy identification and replacement across various product lines.
• Engineered specifically for belt-drive systems, the G2778 rail assembly supports exceptionally quiet operation ideal for homes with attached garages or noise-sensitive environments.