nor to any units which have been subject to misuse

Diagnostic error messaging

Why do you exhaust DI cartridges so fast

Water flows from right to left as seen in the picture

20" Blue Filter Housing PH nor to any units which20" Blue Filter Housing 20" Blue Heavy Duty Filter Housings. Uses the standard 2. 5 inch by 20 inch filter cartridge. Standard Features This is a 20 inch slim line filter housings. Uses the standard 2. 5 inch by 20 inch filter cartridge. Twenty inch cartridges provide much greater flow rates with less pressure drop. The ports openings require a 3 8" fitting. You may also want to buy a stainless steel bracket so this can be mounted to a wall.