Gbonklong Garage Door Jackshaft Chain Hoist 3:1 Re

Updated August 13, 2026

Gbonklong Garage Door Jackshaft Chain Hoist 3:1 Reduced Drive, Heavy Duty Hoist for Roll Up Garage Doors, Jackshaft Garage Door Openers 331LBS Load Bearing Capacity Stable Operation Retailer Link: https://www.amazon.com/dp/B0DPMS4WZ7 Retail Price: $110 Condition: New Open Box Condition Notes: Similar to listing missing chains Damage: No Functional: Not Tested Missing Parts/Pieces: Yes Original Packaging: Yes SKU: 623c3dd0 NOTICE: Item Description below is a copy and paste from Amazon. No warranties or guarantees expressed below are valid. Thanks! Description: Stable Operation: Chain Hoist allows you to pull up the roller shutter or garage door easily, ball bearings and lubrication oil reduce the friction during rotation, 3:1 ratio and speed reduction drive ensure smoother lifting and lowering. Humanized design: The large gear diameter (5.91 inches) and 3:1 transmission ratio can raise the lifting height with as few revolutions as possible, thus saving more energy. High safety and stability: The sturdy chain and construction give the door opener a load capacity of up to 331 pounds, so you can lift your garage door with confidence. Wide ApplicationChain blocks are widely used in industrial areas, including factories, warehouses, farms, garages, ship-building, transportation, construction sites, workshops, and mines. construction sites, workshops, and mines High-quality material: Made of high-quality iron and galvanized process, it is wear-resistant and not easy to deform, which can ensure long-term use. With simple structure and complete installation accessories, you can install it by yourself in a short time. Specifications

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