Pentek Blue Sump #20 (4.5 x 20)
Should be replaced every 5 years.
Does not include O-ring.
Interchangeable with #10 Blue Housings.
NOT interchangeable with Clear housings!
Fits #20 Big Blue caps with any inlet/outlet size.
AirFilters.com
This Pentek Blue Sump is interchangeable with #10 Blue Housings, but is NOT compatible with Clear housings. It does not include the O-ring and should be replaced at least every 5 years.
So purchase one today! Pentair is also known as Pentek.
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