This size 2 door closer from Taymor is made of steel. It also has a high-strength pressure-cast aluminum housing. Its two separate speed-regulating valves control its closing and latching speed. You'll appreciate its narrow design that will seamlessly integrate any decor. It's made for wood, metal or glass doors as well as fire exit doors that weight between 55 lb and 100 lb. This product is UL and ULC approved and backed by a 5-year limited warranty.