Premier Water Systems: Reverse Osmosis Water Filtration System - up to 200 GPD per day. This compact and slim system could be used under the sink or countertop. This system is a 5 stage system that includes all filters: Pre filters: 2.5 x 12 sediment inline filter 2.5 x 12 carbon inline filter 2.5 x 12 carbon inline filter Reverse Osmosis membrane - production up to 200 GPD 2 x 10 inline Post carbon filter Color coded tubing RO faucet feed water adapter Drain valve |