4" x 4" x 1/4" radius hinge, heavy-duty, ball bearings in steel. One leaf mortises into the door edge and the other into the jamb, swinging on the knuckle pin. Specified on interior and exterior residential doors; door height and weight decide how many are needed. Before ordering, check leaf size, corner shape and door thickness against the existing frame preparation. Sold in pairs.
- Material: Steel
- Machine screw: #12 x 1/2"
- Fasteners: #12 x 1"
- Leaf thickness: .129"
- Bearings: 2 ball bearings
- Finishes: 7