Watts-SF-40 Watts String Wound Cartridge Standard 40" in R-Can Sterilight (S740RL-HO) UV Replacement Lamp Bulb for SP740-HO and industrial process water applications

and industrial process water applications requiring flow rates between 1

Dual resin ion exchange

so plan for slightly more clearance below your sink deck than a non-air-gap model would require

Field-tested ballast technology used across Watts SmartStream UV product line

Watts-SF-40 Watts String Wound Cartridge Standard 40" in R-Can Sterilight (S740RL-HO) UV Replacement Lamp Bulb for SP740-HO and industrial process water applicationsWatts Premium Filtration Watts SF 40 String Wound Sediment Cartridge 40 Inch Industrial length polypropylene string wound filter for whole house and commercial applications requiring extended sediment capacity 100% Polypropylene Food Grade 40" Length WHY IT WORKS String wound construction for heavy sediment loads Precision Wound Design Polypropylene string wound tightly around a core creates gradient density filtrationouter layers catch larger