THE FOLLOWING 4-PACK 20'' BIG BLUE FILTERS SET INCLUDES:2 OF 5 MICRON 20'' BIG BLUE CARBON BLOCK CTO WATER FILTER CARTRIDGE BY AQUABOONActivated carbon block is a blend of fine activated carbon, water, and a suitable binder that is mixed and...

2 OF 5 MICRON 20'' BIG BLUE SEDIMENT PP WATER FILTER CARTRIDGES BY AQUABOON Sediment filter is made of fine melted polypropylene, which is blown and spun in a cylinder-like form. The main function of sediment filter is to remove large and fine...

4 OF 1 MICRON 20'' BIG BLUE SEDIMENT PP WATER FILTER CARTRIDGES BY AQUABOON Sediment filter is made of fine melted polypropylene, which is blown and spun in a cylinder-like form. The main function of sediment filter is to remove large and fine...