This 20" Big Blue filter housing accommodates most 20" filter cartridges with 4-1/2" diameters. Large housing size makes this unit perfect for high flow-rate applications. 1", or 1.5" NPT inlet and outlet port options are built into the cap. Also built into the cap is a pressure release that relieves pressure before changing filter cartridges.

Recommended Filter:

• STAGE 1 - Sediment Filter 5 mic (155358-43) Replace every 6-12 months
or
• STAGE 1 - Carbon Block Filter 10 mic (155783-43) Replace every 6-12 months