Pentek 150235, 20″ Big Blue Filter Housing with 1.5″ Ports and Pressure Release (Accepts 20″ x 4.5″ Cartridges)


  • Accepts 20″ X 4.5″ Cartridges
  • Big Blue Filter Housing
  • 1.5″ FNPT Connections
  • Pressure Rating to 90 PSI
  • NSF Certified
  • Housing Includes Cap, Sump and O-Ring Only
  • Mounting Hardware and Wrench Sold Separately

Big Blue Filter Housings offer the versatility to meet all of your large-capacity filtration needs, including high-flow and heavy-sediment applications. The extra large housing allows for greater cartridge capacity, reducing the number of vessels required for high flow-rate applications. Sumps are constructed of durable reinforced polypropylene.

Big Blue housings are compatible with a broad range of chemicals. They accept a wide variety of 4-1/2″ diameter cartridges.


  • Large Capacity Housing Suitable for High Flow Applications
  • Standard 20″ Big Blue Cartridge Length
  • 1.5″ FNPT Ports
  • Blue Polypropylene Housing with Black Cap
  • Pressure Release Button

Pentek Big Blue Flowchart

Additional information

Housing Size

Port Size


Pentek Big Blue Filter Housings


Parts / Accessories