Wire Roll File Offers A Way To Easily Arrange And Access Your Rolled Documents. Compartments Hold Any Size Document. Dustguard On The Bottom Of The File Keeps Materials Clean While Protecting Edges. Weight Capacity Is 100 Lb. Evenly Distributed. Roll File Is Made Of Heavy-gauge Steel Rod (3mm) With White Plastic Coating That Makes It 4mm Thick. Use 1-1/2 Carpet Casters To Move The File Where Needed."