Coast Pneumatics’ NEMA Type 4 carbon steel enclosures are acceptable for many indoor and outdoor environments. Our inventory of steel electrical enclosures meet the NEMA Type 4 standards. Most mild steel enclosures are manufactured from hot or cold rolled steel. It is important to note that mild steel enclosures typically will not receive a corrosion resistance ("X") rating, however by applying a powder coated paint finish can greatly improve the performance of these materials. Available styles for Carbon Steel (mild steel) enclosures include junction box and wall mount options. Contact Coast Pneumatics today for Rittal steel enclosures!