This Dunnage Rack is constructed from polyethylene and is promised not to crack, chip, peel or rust. This product can hold up to two thousand pounds and comes with a two year guarantee. This Dunnage Rack has rounded edges to protect the products being stored on it. This product has deep grooves to improve air circulation, and to prevent a mess if there is a spill. This Dunnage Rack has the capacity to hold up to two thousand pounds.