Also known as jelly jar lights. These fixtures have a heat-resistant lens and a guard that protects the lens from breaking. They are CSA certified for hazardous locations where flammable/combustible gases, vapors, and liquids may be present. They are rated NEMA 4X for protection against corrosion and washdowns. Lights are sealed to keep moisture out. They can be hardwired to operate on any of the voltages listed. Some work with LED or incandescent bulbs (sold separately).

Styles 4 and 7 can be used in environments where ignitable concentrations of hazardous material are present under normal operating conditions, and/or during frequent equipment maintenance or failure. Rated for Class I, Divisions 1 and 2, Groups C and D; Class II, Divisions 1 and 2, Groups E, F, and G; and Class III, Divisions 1 and 2, these lights withstand ethylene, propane, conductive or metal dusts, carbonaceous dusts, nonconductive dusts, and combustible/ignitable fibers or flyings.