Constructed with die cast anodized aluminum parts, Series SLEX-100 and REX-100 provide lighting and viewing through single port. Both corrosion-resistant electric lighting fixtures are listed to UL-844 and C-UL/CSA C22.2 No 137. They use high-intensity halogen lamps to provide bright, glare-free illumination of normally closed containers. Lens is finely ground borosilicate glass that mates with machined seat in body of fixture to form seal.