STAINLESS STEEL EXPLOSION-PROOF ENCLOSURES Adalet now offers Division 1/ Zone 1, 316L stainless steel, explosion-proof enclosures. They're designed for use in highly corrosive areas where environmental conditions require additional corrosion protection. Rated for Class I, Division 1/Zone 1 hazardous locations, the XCESX series carries UL, cUL, ATEX and IECEx approvals. Five standard sizes from internal dimensions of 10 in. W x 14 in. H x 8 in. D up to 24 in. W x 36 in. H x 10 in. D.