Tested and certified by NSF international against NSF/ANSI standard 42 for the reduction of chlorine, taste and odor, and to NSF/ANSI 372 for lead-free material Product Contents: Faucet Device, ACF Filter (2x), Adapters (2x), Manual System Details: Filter Life: 320 Gallons. Flow Rate: 0.5 gallons/min. Operating Pressure: 15-100 psi. Operating Temperature: 41-100F Important note: works with standard faucets, does not fit pull-out, hand-held, spray style faucets or faucets with sensor