Experience premium performance with this Heavy Duty Aluminum Hydraulic Door Closer, built for doors weighing 25–45kg. Its die-cast aluminum body and stainless-steel arm ensure long-lasting durability, while the dual-valve system allows smooth, quiet, and adjustable closing speed. Fireproof, corrosion-resistant, and tested for 300,000 cycles, this closer guarantees safety, stability, and effortless installation for any home or commercial door.Auto Close Aluminum Hydraulic Door Closer Adjustable Strength Feature, Heavy Duty Adjustable Automatic Door Closer Smooth Hydraulic Control, 100% Brand New Aluminum Hydraulic Door Closer Dual Speed Regulation, Reliable Heavy Duty Aluminum Door Closer Fireproof Easy Installation, Smooth Operation Hydraulic Door Closer Premium Aluminum Construction Door Closer