Upgrades your cabinets with this alloy hydraulic, featuring smooth up wards motion and antisag design for effortless overhead door operate Installation Instructions builts-In buffers 1, 400-700MM door width, 1 can be installed, defaults is: right-side installation cover2, 700-1100MM, 2 can be installed to keep the door panel Perfect for enthusiasts, homeowners, and renovators seek hasslefree installation solution for frequently accessed cabinets or display unit, Manufacturer: Oxxggkao