Quantum Storage Systems mobile louvred floor racks hold varying styles of bins for storing parts & supplies. These steel units accommodate heavy-duty plastic bins and feature 2 swivel & 2 rigid casters with brakes for smooth mobility in tight spaces. They come with a double-sided storage system for holding up to 120 bins at one time and powder coated finish to enhance the overall appeal. Selected bin shelving systemsfeature dual-layer construction & a hemmed perimeter for durability.