10 Inch Transparent Whole House Water Filter Housing Cheap Water Filter and the blue cap is

and the blue cap is made of high-flow polypropylene for toughness

the black cap has 3/4-inch inlet/outlet brass ports

and hydrogen sulfide from your water to name a few

but a cover plate is included in the package to accommodate larger pre-drilled holes

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10 Inch Transparent Whole House Water Filter Housing Cheap Water Filter and the blue cap isRonaqua's 10 Inch Transparent Whole House Water Filter Housing (RA 124 10S) is used with any standard 10 inch by 4. 5 inch sediment, pleated sediment, carbon block or GAC cartridges (sold separately). Use it with any of our water filter cartridges to remove chlorine, bad tastes, odors, and other particles. Together, this set is ideal for high flow and heavy sediment applications. They are usually placed in the main water line entering the house