- 1.Garage Door Jackshaft Chain Hoist,Roll Up Door Opener (1)Gear ratio: 3:1 (2) 41B36 Sprocket 1″ bore (3)36″of 41# roller chain (4)26′ of hand chain (5)chain keeper, 1/4″ *1/4″ 1 3/8″ square key
- 2.Designed for both roll up doors and jackshaft garage door openers, easily lift large garage doors with ease.
- 3.Built with a high-strength chain design, this hoist is durable and reliable, able to withstand heavy loads.
- 4.Works seamlessly with garage door cables to ensure safe lifting and lowering.
- 5.An ideal replacement for your garage door opener, ensuring smooth and durable lifting for your roll up garage door or jackshaft opener.making it a great DIY project.