Spring Hinge Steel Material Gray Enamel Finish With Holes 4 Holes per Leaf No Ligature Resistant 180 Degrees Range of Motion Orientation Non Handed 4 1/2 in Door Leaf Height 4 1/2 in Frame Leaf Height 2 in Door Leaf Width 2 in Frame Leaf Width 0.098 in Door Leaf Thickness 0.098 in Frame Leaf Thickness Plain Bearing Type Square Corners Included Hardware Full Mortise Mounting 3 in Overall Knuckle Height Steel Pin Material Nonremovable Pin Type