Rack Guard with Rubber Bumper Insert. Protect pallet racking with durable wrap around protection. Fits pallet rack measuring 3" wide by 3-3/4" deep. Increase pallet rack column strength on impact by over 100%. Includes rubber bumper insert, 1/2" thick, and hardware. Easy to install with wrench or socket. No concrete drilling required. Steel construction. Powder coat safety yellow finish. Specs: Overall Size 3-3/8" x 4-7/8", Usable Opening 3-1/8" x 4-1/4".