Check the listing for details. Inline Coconut Grade Activated Carbon Pre/Post Filter Set of 3. Condition: New. Listed at 19.99 USD. < Inline Coconut Grade Activated Carbon Pre/Post Filter Set of 3 Made by: Unit Price: $19.99 The specifications of the set are as follows: 3 of Inline Coconut Grade Activated Carbon Filter is also known as polishing filters, because they would usually be the last stage of any standard Reverse Osmosis circuit. Being made of high quality coconut shell carbon they stabilize the water tasting qualities and further remove any traces of bad tastes and odors. Product Features Pre/Post Membrane Filter Incorporating coconut grade activated granular carbon for better tasting water. Flow Rate: 0.75 GPM (2.8 LPM) Temp Range: 40℉-100 ℉ Pressure Range: 30-125PSI Dimensions: 10 " x 2" Lifetime: Replace ones in 2 years This filter is wrapped and sealed and meets NSF Standards and Regulations.