Safe high-intensity illumination for sight glasses, ports, or general applications in hazardous (classified) locations. For specific-area illumination or the illumination of sight glasses or Visual Flow Indicators, the Lumiglas Model USL08EX-LED lights are UL approved for Class I, Division 1 and 2, Groups C & D, Division 2 Groups A & B applications. These sturdy, compact lights are now available with up to 2,200 lumens at a color temperature of 6200K . On sight glasses 6″ and larger, the USL08EX-LED Luminaire provides combination illumination and glare-free viewing. View the circular sight glass fitting weld-on styles Series DIN28120 or ANSI flange bolt-on types to find a configuration to suit your needs.