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, CFL, halogen, and incandescent bulbs (sold separately), while others accept fewer kinds.

Styles 1, 3, 5, 7, and 8 can be used in environments where ignitable concentrations of flammable/combustible gases, vapors, and liquids or combustible dust occur infrequently, such as in the case of an accidental spill or failure of a ventilation system, and where combustible/ignitable fibers or flyings are present under normal operating conditions and/or during frequent equipment maintenance or failure. Rated for Class I, Division 2, Groups A, B, C, and D; Class II, Division 2, Groups F and G; and Class III, Divisions 1 and 2, these lights withstand acetylene, hydrogen, ethylene, propane, carbonaceous dusts, and nonconductive dusts.