Invisible Hinge, Finish Satin Brass, Mounting Full Mortise, Load Capacity Medium Duty, Door Thickness 1-1/8 In., Range of Motion 180 Degrees, Holes per Leaf 2, Material Zamac and Steel, Height 3-3/4 In., Width 1-9/32 In., Color Brass, Corners Rounded, Frame Leaf Length 3-3/4 In., Frame Leaf Width 3/4 In., Door Leaf Length 3-3/4 In., Door Leaf Width 3/4 In., Leaf Thickness 1-5/64 In., Pin Material Steel, Pin Type Nonremovable, Hardware Included, Standards ANSI/BHMA 156. 1-2006