This compatible UV lamp assembly will fit all of the units below.UMX: 1900T, 1902TUME: 1900T, 1902T, 19242T, 1924TUVS: 1900T, 1202TUVE: 1900T, 1902TPhotronic SST: 92-006, 92-075, 92-078, 92-081, 92-042, 92-084, 92-087, 92-090, 92-093, 92-096, 92-099, 92-102, 92-105, 92-108Photronic ST: 92-003, 92-111, 92-045, 92-114, 92-026, 92-027, 92-117, 92-030, 92-120, 92-033, 92-123, 92-036, 92-126, 92-039, 92-129Photronic RAD: 92-009, 92-132Photronic SBS: 92-012, 92-135Photronic SBL: 92-015, 92-138Photronic HEPA: 92-018, 92-021All lamps listed are compatible brand (LightExports) UV products. We do not sell Ultravation brand lamps. All Ultravation brand names, trademarks and logos are property of Ultravation.