Pentair Housing 1.5'' #20 BIG BLUE

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Housing 20" BB
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. 1.5" BSP inlet and outlet port are built into the cap. Also built into the cap is a pressure release that relieves pressure before changing filter cartridges.

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