NATIONAL BOX RAIL HANGERDesigned for use with box rail on wood-frame sliding doors from 1- 1/2 inches to 2 inches thick. For use with rectangular box rails. 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 (tm) seals keep out dirt while holding in long-life grease. Safe Working Load - 300 lbs. per hanger.
- 600 pound capacity per pair, (2 hangers per box)
- Flexible with single door strap
- Steel w/ Steel Roller Bearings
- Fits box rail/square
- Wheel diameter 2.14"
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