This is a door damper for the surface mount; It can be installed later on your existing doors; Easy to match the installation position; For interior door opening; Color: Dark Brown; Applicable door weight: 3.1 - 15.8 lbs (15 - 40 kg); Width: 8.3 inches (210 mm); Depth: 1.3 inches (33 mm); Height: 0,0000 times open/close test; Cover: ABS resin.