6 pcs Big Blue CTO Carbon Block Water Filters 4.5″ x 20″ Whole House Cartridges Set. The specifications of the set are as follows. 6 Big Blue CTO Carbon Block Water Filters 4.5″ x 20″ Whole House Cartridges (C-20BB) -10 Big Blue Block Activated Carbon filters are similar in their performance to that of GAC filters, being made of fine coconut shell carbon they also do remove odors and tastes of many organic compounds, chlorine especially. Though, because this filters are made of a packed carbon (forming a cylinder block), they offer a much finer filtration of suspended particles and dirt. Those filters are fit all 20 Big Blue Water Filter Housings. Individually wrapped -Flow rate: 5 GPM -Filter life: 20,000 gallons -Operating Temperature: 39°F125°F (4°C52°C) -Max. Operating Pressure: 60 psi -Removes chlorine, odors, particles, and tastes -Good for water filters and aquariums. Food and beverages -Reverse Osmosis Pre filtration -Oil and gas -Fine chemicals -Electronics -Metal finishing -Pulp and paper. Dimensions: 20″ x 4.5″. This filters are wrapped and sealed and meet NSF Standards and Regulations. The item “6 pcs Big Blue CTO Carbon Block Water Filters 4.5 x 20 Whole House Cartridges” is in sale since Monday, October 03, 2016. This item is in the category “Home & Garden\Home Improvement\Plumbing & Fixtures\Water Filters”. The seller is “ezbuy_365″ and is located in Brooklyn, New York. This item can be shipped to United States.