The Pentek 150236 1 1/2" Big Blue 20" Filter Housing is an extra-wide housing that accommodates large 4 1/2" wide filters for increased flow.
This housing does not have a pressure relief button on the cap.
The Pentek 150236 is made of a durable, reinforced polypropylene that is compatible with a variety of chemicals. Topping the housing off is a high-flow polypropylene cap (HFPP) with a 1 1/4" internal port that allows water to pass through rapidly. This coupled with the already larger-than-standard filter capacity make Big Blue Housings popular choices for high flow applications.
The Pentek 150236 is tested and certified by NSF International to NSF/ANSI Standard 42 for material and structural integrity requirements.
Click these links to view carbon and sediment filters for 20" Big Blue filter housings.
Product Specifications for #20 BB Filter Housing