Supply Unit: 3 sections Specification Compliance: NFHSMaterial: Extruded Aluminum1" x 3/4" x 1/4" angle profile that attaches directly to wood shot or synthetic shot toeboard. Designed to be mounted on top of the concrete. Please Note: This item CANNOT ship to P.O. Boxes, APO, or FPO Addresses. It CAN ONLY ship to a Street Address.