CB-45-1005 Compatible NSF Carbon Block Filter 4.5" OD X 9 7/8" Length, 5 Micron by CFS Drop-in cartridge provides quick and easy filter change Optimized to perform as both a sediment and activated carbon filter Radial flow (outside-to-inside) filtration provides increased dirt-holding capacity Competitively Priced vs. GAC filters CB-45-1005 Compatible NSF Carbon Block Filter 4.5" OD X 9 7/8" Length, 5 Micron by CFS -Fits any standard housing that uses 9.75" x 4.5" replacement filter cartridges. -Drop in cartridge provides quick and easy filter change. -Optimized to perform as both a sediment and activated carbon filter. -Radial flow outside to inside filtration provides increased dirt holding capacity. -Made in the USA. Country of Manufacture: -United States. Product Type: -Whole house. Filter Component: -Replacement filter. Dimensions: Overall Height - Top to Bottom: -9.75". Overall Width - Side to Side: -4.625". Overall Depth - Front to Back: -4.625". Overall Product Weight:This is not a OEM product. The brand names and logos are the registered trademarks of their respective owners. Any use of the brand name or model designation for this product is made solely for purposes of demonstrating compatibility.