25pcs Big Blue CTO Carbon Block Water Filters 4.5″ x 20″ Whole House Cartridges. If you message us with special circumstances, we will try and accommodate your situation. If we do not hear anything from you within two days, on the third day, we will open an unpaid item case against you. Thank you for purchasing from us! Be sure to check back for new items added weekly! The item “25pcs Big Blue CTO Carbon Block Water Filters 4.5 x 20 Whole House Cartridges” is in sale since Tuesday, March 31, 2020. This item is in the category “Home & Garden\Kitchen, Dining & Bar\Small Kitchen Appliances\Water Purification\Water Filters”. The seller is “auctionsinky” and is located in Lexington, Kentucky. This item can be shipped to United States.