This lamp is the genuine VIQUA replacement lamp for VIQUA E4, E4+, E4-V, E, E+, PRO7 and IHS (E4) Model systems. It is extremely important to replace this lamp every 12 months to maintain proper system efficacy. 

Why using a genuine VIQUA lamp is important: VIQUA UV systems and lamps are tested and certified as a complete unit. Using an authentic VIQUA lamp ensures proper system performance and water treatment. This video explains the 5 risks of non-VIQUA aftermarket lamps and how to identify authentic VIQUA lamps.

NOTE: Using non-VIQUA lamps voids all UV system certifications and may compromise your warranty should an issue arise.