20 pk 10"x2.5" 1 Micron Grooved Sediment Melt Blown Filters Cartridges (Compatible Replace Aqua-Pure AP1001, Aqua-Pure AP109, Watts FPMBG-1-975) 20 pk 10"x2.5" 1 Micron Grooved Sediment Melt Blown Filters Cartridges (Compatible Replace Aqua-Pure AP1001, Aqua-Pure AP109, Watts FPMBG-1-975)