Channel PBA708 Tub Storage CartAmerican made, you can expect Channels PBA708 poly box rack to be sturdy, durable, and easy to maintain. Its heavy duty, high tensile extruded aluminum construction is rust and corrosion resistant. The PBA708 is NSF certified to meet standards for commercial kitchen use. The poly box rack has 5 swivel casters for easy maneuverability. They are non marking which prevents streaks and stains from getting on floors. The casters are securely bolted to the