05-2003 replaces Culligan 01017267, C231924, LAHV90, Rainsoft Water Treatment 65501, Air Master Ultra Ozone, LAHV90, GCL212T5VH/4 Lamps is a 12.5 watts and 212 mm in length

05-2010 lamp replaces Culligan LAHV90L, Rainsoft Water Treatment LAHV90L. The lamp is 15 watts and 256 mm in length, rated effective life 10,000 hrs., change once a year.

05-2012 lamp replaces Culligan Culligan 65048, Air Master Ultra Germicidal, LAHV91, Rainsoft Water Treatment 65048, Air Master Ultra Germicidal. LAHV91, GPH357T5L/3 SPECIAL. The lamp is 17 watts and 357 mm in length, rated effective life 10,000 hrs., change once a year