Replacement germicidal ultraviolet lamp for Trojan UV Logic AL reactors, Trojan original part number 793011. It measures 1565 mm overall by 19 mm in diameter and is rated for 12,000 hours of service. Output falls steadily through life while the lamp continues to strike, so a germicidal lamp is replaced on hours run rather than on failure; running past the rated life is the most common reason a system drifts below its required dose. Trojan lists a separate lamp of the same 1565 mm x 19 mm envelope and the same 12,000 hour rating for AL reactors in the vertical mounting configuration, as item 15185-1018; confirm the reactor’s mounting orientation and the lamp’s end connector before ordering. The same lamp is also listed as fitting the Wedeco K143 12/6. Item number 15162-1216. Trojan original part number 793011. Supplied by cBallast on quote-to-invoice terms; lead time and freight are quoted per RFQ against the destination Incoterm.