Big Blue Filter Housing – 20 x 4.5 inch: 3/4″ In/Out Connection


Sold in Case Quantity, 4 housings per case.

Pentair Big Blue Cartridge Filter Housing (4.5″ x 20″): without pressure release button

Has 3/4″ Female pipe thread connection for the Inlet and Outlet connections that are molded into the head assembly. This filter head has mounting locations for a wall mount bracket. This model does not include the pressure relief port, to remove pressure when changing filters. Important to have isolation valves that allow pressure to be removed from pipeline before changing filter cartridge. This housing uses 4″ – 4.5″ diameter filters, with a length of 20.” Check out the carbon block and sediment filters for this housing.

SKU: 150468 Category:


Pentair Big Blue Cartridge Filter Housing (4.5″ x 20″): Streamlined Power for Unmatched Filtration

In the realm of water filtration, the Pentek Big Blue Cartridge Filter Housing in the 4.5″ x 20″ size stands tall, delivering a seamless blend of efficiency and versatility. Designed for both residential and industrial use, its generous dimensions ensure a constant flow of pristine water.

A Compact Powerhouse: Measuring 4.5″ x 20″, the Pentek Big Blue doesn’t just filter water; it transforms the filtration experience. Its compact design conceals a robust construction, standing resilient against corrosion and wear.

Versatile Filtration: Adaptable to various cartridge filters, the Big Blue is a chameleon in the filtration world. From sediment removal to impurity reduction, it accommodates your water quality needs with ease.

Efficiency Unleashed: Maintenance is a breeze with the Big Blue. Effortless cartridge replacements ensure minimal downtime, allowing you to focus on what matters most—clean water, hassle-free.

Leak-Free Assurance: No room for compromise. The Big Blue’s secure sealing mechanism guarantees leak-free operation, providing peace of mind and eliminating concerns about water wastage.

Upgrade your water filtration experience with the Pentek Big Blue Cartridge Filter Housing (4.5″ x 20″)—where compact design meets unwavering performance.

Additional information

Weight 25 lbs
Dimensions 24 × 24 × 20 in
Pressure Rating

100 PSI

Filter size

4.5" x 20"

Connection Type

Female pipe thread

Piping Connection Size


Has pressure relief valve