Model Number: CH-CH04 Brand Name: CHI Key Specifications/Special Features: Chain hoist for garage door hardwareGear ratio: 4:1Sectional door hardware for 16*7, 16*8, 9*7, 9*8 garage door, we could provide you hardware box according to your demanded size.We have many other components in our showroom for you to choose from.We have been in this field for more than 8 years; we can guarantee qualified products, best service and hope we can have long-term co-operation.Contact with us if you have any question. Description: Chain Hoist Art number: CH-CH04 Ratio: 4:1