Spring Hinge Steel Material Prime Coated Finish 40 lb Load Capacity With Holes 4 Holes per Leaf No Ligature Resistant 180 Degrees Range of Motion Orientation Non Handed 4 in Door Leaf Height 4 in Frame Leaf Height 1 5/8 in Door Leaf Width 1 5/8 in Frame Leaf Width 0.099 in Door Leaf Thickness 0.099 in Frame Leaf Thickness 1-3/8 in Required Door Thickness Ball Bearing Type Square Corners Included Hardware Full Mortise Mounting 4 in Overall Knuckle Height