Designed with rust-proof, corrosion-resistant, high-tensile extruded aluminum, this security cabinet is plenty tough for all industrial applications, regardless of industry. Each shelf is constructed of 1.5 x 1.5 x .070 extruded aluminum tubing with a reinforcing T-bar running the length. The doors and sides are similarly reinforced, each 1/8-inch thick with 1 x 1 x .070 wall tube. The louvered sides and fronts allow for the storage of just about any kind of material. Four large casters, each with a 290-pound capacity, allow for easy transportation when necessary.