*Product May Be Subject To Extended Lead Times. The UltraZap 55W Stainless Steel Professional UV Sterilizer is a heavy-duty water sterilization unit designed for demanding marine and industrial applications. Its corrosion-resistant stainless steel body ensures long-term durability, while the high-intensity UV lamp effectively neutralizes harmful microorganisms. Ideal for large-scale water treatment, aquaculture, and marine filtration systems, this unit provides superior sterilization and improved water clarity.