| Harmsco (HB-20-50W) 20"X4.5" Big Blue "Calypso Blue" Pleated Sediment 50 Micron Filter |
 Premium quality cartridges made of pleated polyester filter media for long life and high dirt holding capacity Cartridges can be cleaned and reused in most applications and micron ratings. Available for both 10� and 20� Big Blue housings. Price: 32.99 |