National catalog model No. V522, 5/8 In. radius spring door hinge. Manufactured with cold-rolled steel. Closing speed is adjustable. Fits standard hinge cutout. Tension is adjustable. Hinge is UL approved for fire doors.
National catalog model No. V522, 5/8 In. radius spring door hinge. Manufactured with cold-rolled steel. Closing speed is adjustable. Fits standard hinge cutout. Tension is adjustable. Hinge is UL approved for fire doors.
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