Killark LZ2NE2-40201 - NEMA 4 & IP66 rated enclosure. Housing-one piece fiberglass reinforced polyester or 316 Stainless Steel. Clear Lexan® impact resistant polycarbonate lens. Two 3/4” NTP hubs - one at each end (includes one 3/4” close-up plug and two 3/4” X 1/2” reducers for maximum user flexibility). Two 1/4”- 20 bushings furnished in top of fixture for threaded rod The LZ2NE Series Emergency Fluorescent Linear luminaires are designed for installation in high bay and low bay applications. This fixture is made with a non-metallic fiberglass reinforced housing that is suitable for harsh and hazardous environments. - Class I, Division 2, Groups A, B, C, D - Class I, Zone 2, Groups IIC, IIB, IIA - Class II, Division 2, Groups F, G - Class III, Divisions 1 & 2