Invisible Hinge, Finish Satin Chrome, Mounting Full Mortise, Load Capacity Heavy Duty, Door Thickness 1-3/4 In. , Range of Motion 180 Degrees , Holes per Leaf 4, Material Zamac and Steel, Height 4-5/8 In. , Width 3-1/8 In. , Color Silver, Corners Rounded, Frame Leaf Length 4-5/8 In. , Frame Leaf Width 1-1/8 In. , Door Leaf Length 4-5/8 In. , Door Leaf Width 1-1/8 In. , Leaf Thickness 1-41/64 In. , Pin Material Steel, Pin Type No removable, Hardware Included, Standards ANSI/BHMA 156. 1-2006