Harmsco (HB-20-1W) 20"X4.5" Big Blue "Calypso Blue" Pleated Sediment 1 Micron Filter

Premium quality cartridges made of pleated polyester filter media for a long life and high dirt holding capacity

Cartridges can be cleaned and re-used in most applications and micron ratings. Available in for both 10" and 20" "Big Blue" housings.