Provides safe, pure water using RO, sediment filter and carbon filters. It is capable of destroying more than 99% of bacteria and viruses, and it is the natural way to protect your water without the addition of harmful chemicals. System installs neatly under the sink. Comes with necessary installation hardware. System Features: with(without) microprocessor / with 11 gallon tank 4 / 5 Stage Filtration 2 gallon per minute/7.2 liters per minute flow rate with(without)304 Stainless Steel UV Housing LED indicator and alarm for lamp failure Long Reach Faucet (actual faucet may differ from that shown) NSF listed components FDA approved components All hardware included Stage 1: 5 microns sediment pre-filter Stage 2: Activated Carbon pre-filter Stage 3: Carbon block pre-filter Stage 4: RO membranes filter Stage 5: Sediment active carbon filter Fully Assembled