Killark EMI20 - Four light sources—Incandescent, compact fluorescent, high pressure sodium and metal halide. Mounting choice—Pendant, ceiling, 25˚ stanchion or 90˚ wall mount, all with “wireless” design that allows fast, easy fixture installation. Factory sealed—No external seal needed. Simply wire mounting cap and thread on fixture to install. Compact size—Medium base incandescent and HID lamps, plus PL fluorescent lamps allow smaller fixture design. Corrosion resistant—Copper-free aluminum die-cast construction. Baked powder epoxy finish, electrostatically applied. Exposed hardware is 316 grade stainless steel. The EM series Explosion Proof medium base fixture is designed for low bay applications. This fixture is made with a cast copper-free aluminum housing and mount that is powder epoxy powder coat painted for extra corrosion resistance, making them suitable for harsh and hazardous environments. The EM Series is factory sealed so no external seal is required in Explosive environments. - Class I, Divisions 1 & 2, Groups C, D - Class I, Zones 1 & 2, Groups IIB, IIA - Class II, Divisions 1 & 2, Groups E, F, G - Class III, Divisions 1 & 2