The Pentek 166144 is the correct housing system that uses:
The Pentek Big White Filter Housing is designed to accommodate your large-capacity filtration needs that include high flow and heavy sediment applications. Also known as part number 144144, the sump of this Pentek 20" Water Filter Housing is constructed out of durable reinforced polypropylene.
Pentek Big White Water Filter Housing specifications:
The extra large housing of the Pentek 166144 reduces the number of vessels required for high flow rate applications. This Big White Housing uses a variety of 4 1/2" diameter cartridges.