[Specifications] The 41A3589-3 drive belt assembly has 12 grooves every 6 inches on the belt. Fits 7ft garage door height. Also known as part numbers 041A3589-12, 41A3589-12, 41A3589, 041A3589-3. [Quiet] The 041A3589-3 belt has fine workmanship, precise dimensions, and durability. It has good wear resistance, resistance, and anti-slip properties. It is quiet during operation and reduces noise and vibration. [Compatibility]41A3589-3 Belt Assembly Kit for 7ft Residential Garage Doors. Compatible for garage door opener models: 1280 1280R 1270 series, compatible for models 139.53800SRT 139.53664SRT 139.53664SRT2 1280 1270 8200, 8100, 9200, 9500. [Sturdy Structure]The 41A3589-3 belt drive structure is composed of high-density PU and -grade steel wire. Each belt has passed more than 30,000 bending life tests and has strong load-bearing capacity, providing sufficient safety for daily use., Weight: 1.03507032009 Pounds, Manufacturer: Gishbjka