Bud’s ATX product is certified for intermittent or infrequent explosive atmospheres. For gas that would be Category II, Zones 1 and 2. For grain and conductive dust it meets Category III, Zones 21 and 22. It is not certified for use in mining or underground, which would be Group I. Explosion proof does not mean that the box will not explode, but that the internal components or processes will not cause an external explosion. Bud’s ATX product series is tested by TUV and is also listed IP66, based on the IEC-60529 Standard. The IP66 rating means that it can be hosed down and sprayed down and will still protect the internal components. The product is made from a heavy duty aluminum die cast that is gray powder coated in RAL7002. There are 10 sizes available ranging from 3 x 3 x 2in to 14 x 5 x 3.5in. The products now can be modified by Bud and still maintain their rating.