National Hardware National Hardware N182-568 Box Rail Hangers Zinc Plated

National Hardware National Hardware N182-568 Box Rail Hangers Zinc Plated Highlights:Material : Steel Bearings;Zinc plated;Designed for use with box rail on wood-frame sliding doors from 1-1/2 to 2 thick;Packed with two end caps and bolts for attaching door straps;Slot in top of door strap allows lateral and vertical adjustment;Durable one piece precision formed steel;Each hardened axle has 12 hardened and precision ground alloy steel roller bearings;Delrin seals keep out dirt while holding in long life grease;Safe working load 300 lb. per hanger;