05-0542 replaces 05-0542 uv lamp replaces Atlantic Ultraviolet GPH1627T5VH/MDBP, Gaylord Industries 19301, rated effective life 10,000 hrs., change once a year
05-0543 replaces Atlantic Ultraviolet GPH865T5VH/MDBP, Gaylord Industries 19296 , rated effective life 10,000 hrs., change once a year.
