The Pentek 255985-43 system requires the following parts to operate:
The Pentek UV2-4-G-1/4" 120V John Guest Filter System is an ultraviolet inline filter system that requires the Pentek UV-2BAL Ballast Power Supply (also known as the Pentek 163549) to operate. This ballast properly regulates the voltage required to power the ultraviolet lamps. This Pentek UV system destroys bacteria, viruses, and many other microorganisms in water by interfering with their molecular structure. This Pentek UV inline water unit features a built-in flow restrictor and measures 2" x 10".
Pentek UV2-4-G-1/4" 120V John Guest Filter System specifications: