BIG BLUE 20"X4.5" TRIPLE WATER FILTER SYSTEM 1" NPT Sediment/Catalytic Carbon/Carbon Block Description: Triple Whole House/Light Commercial - Big Blue Water Filter System 20"x 4.5" features: This filter has (3) - 20"x 4.5" water filter cartridges that are designed for high-flow water filtration applications. Unique, wide cartridges are capable of filtering enough water for a house, apartment or office. Great for well water. Stage 1 - Sediment Water Filter 5 Micron Sediment cartridge filters are primarily used to remove silt, sand or other particulate matter from water. Stage 2 - Cartridge is a Catalytic Carbon Catalytic carbon water filter media is designed to help reduce hydrogen sulfide gas, iron and chloramines from your drinking water, along with help to improve taste and odor. This unique media is produced from bituminous coal and works with low oxidant levels. Its make up allows it to help remove a greater amount of contaminants from your water at a lower cost when compared to other, similar media Stage 3 - Carbon Block Filter 5 Micron 20" x 4.5" Carbon Block strains out sediment, dirt, bacteria, microscopic worms, algae, asbestos and cryptosporidium. With water pressure, this compacted solid carbon block is designed to filter sub micron size particles. This micro straining of the water will provide clean and clear drinking water. Big Blue Whole House Triple Filter System: Heavy Duty design, easy filter cartridge changes Pressure release Valve Wall Bracket 1" NPT input/output (water line diameter) Sediment Filter Catalytic Carbon Cartridge Carbon Block Filter Housing Wrench 2 Connector 1" 12 Bolts/Screws Assembly required. This system comes with a first sediment filter, second Catalytic Carbon, third stage Carbon Block filter. Payment: PayPal. Shipping: All items ship via FedEx Ground, USPS Parcel Services/USPS Priority Mail within 1 business day. Terms of Sale: We accept returns within 14 days of delivery, used, installed or items not in original sealed condition will not be accepted for return. Please inspect your items upon delivery, any damages, defect, you must notify us within 24 hours of delivery. About Us: Titan Water Pro is your "Clean Water Solutions"