"Loading operations will be safer and easier with the 60"" L x 72"" W HD Ramps Lightweight Aluminum Dock Board. Engineered to weigh less than Bluff or Guardian options, this heavy-duty dock board supports up to 20,000 lbs. It’s manufactured from rust-proof aluminum with a commercial-grade epoxy grit coat surface for ultimate traction in all weather conditions. The knife foot smooths the transition from ground to ramp, and an 84” lifting chain facilitates moving the dock board with a forklift. This dock board is suitable for a 7” height differential."