Optimized for 7ft Garage Doors： The 41A5434-11 drive belt features a total length of 234 (effective belt length: 232 ) with 20 grooves per 6 inches, engineered for standard 7-foot residential garage doors. Its precision design ensures smooth operation while significantly reducing noise—ideal for homes with adjacent living spaces. Multi-Brand Compatibility： Compatible with Chamberlain LiftMaster models (HD600, WD952KD, WD952KLD, WD822KS, WD833KS, WD912KS) LiftMaster openers (2280, 2500, 2580, 2585, 3280, 3500, 3850). Directly replaces 41A5434-1, 41A5434-11A, 041A5434-11, and 041A5434-11A belts. Always verify your old belt’s model and end fittings before purchase. Premium Construction for Safety & Durability： Made of high-grade polyurethane (PU) with reinforced steel belt clips, this belt undergoes rigorous quality testing to ensure reliable, accident-resistant performance. Combines silent operation with extended lifespan. Upgraded Quiet Operation： Improved material with smooth surface treatment reduces noise significantly compared to standard belts, ensuring quieter performance for household and neighborhood comfort. If you have any questions, please contact us and we will answer your questions. Color 41A5434‑11 Belt Style Polyurethane with Reinforced Clips Brand Name folosem Item Weight 0.56 Kilograms Manufacturer folosem Material Type Polyurethane (PU) Item Type Name Garage Door Opener Belt Drive Compatible Devices Chamberlain, liftmaster, sentex, whisperdoor Included Components 41A5434‑11 Garage Door Opener Belt Drive *1 Item Dimensions L x W 233.5 L x 233.5 W