The Spectra IV SE Series Stainless Steel dome system is designed for harsh environmental installations and meets NEMA Type 4X and IP66 standards. The components (back box and lower dome) provide added protection?against corrosive conditions. The pendant-style back box (BB4-PSG-E) is constructed of Type 316 Stainless Steel (SS) and includes a sun shield (also constructed of Type 316 SS), heater, and fan. The lower dome features a trim ring constructed of Type 316 SS and an optically clear bubble that is available in smoked (LD53PSB-0) or clear (LD53PSB-1) acrylic. Spectra IV SE Stainless Steel series PTZ dome cameras provide high quality video with state-of-the-art environmental protection from corrosive elements.