Install your door with Onward hardware hinges. Made of brushed chrome steel, it resists rust to retain a matte-like finish. This mortise butt hinge leaves a neat look when the door closes. It has six screw holes that create secure joints. These 3 1/2 in L x 3 1/2 in W steel hinges support interior and exterior doors of up to 50 lb. | Onward Onward Square Full Mortise Butt Hinge – 3 1/2-in W x 3 1/2-in H – Loose Pin – Brushed Chrome 821BCV Onward | Square Full Mortise Butt Hinge – 3 1/2-In W X 3 1/2-In H – Loose Pin – Brushed Chrome .