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  • SKU158204
  • Price
  • Manufacturer Pentek Ametek

NSF Certified
Pentair 158204 is Tested and Certified by NSF International to NSF/ANSI Standard 42 for material and structural integrity requirements.


Pentek Ametek Water Filter Housings Pentair Water Filter Housings
#20 SlimLine Filter Housing for 20" Standard Water Filter Cartridge 

Blue Body | Black Cap | Traditional Cap Design | 1/2" In & Out Connections | With Pressure Relief

Pentair Pentek Traditional Slim Line Filter Housings are manufactured of a durable polypropylene and are designed to be compatible with most nominal 20" Standard sized filter cartridges. These 20-inch Pentek Slim Line filter housings, molded from rugged reinforced polypropylene, offer outstanding chemical compatibility and are ideal for use in a variety of low-flow applications. These applications include undersink and countertop residential filtration, pre- and post-reverse osmosis filtration, recreational vehicle filtration, food service and humidifying systems.

Pentek 158204 features a pressure relief button on the inlet side of the cap, to release pressure before opening.

Water Filtration Product Specifications

Note that the actual dimensions of 20" Standard filter cartridges vary per filter type and model - these are typically between 2" to 2⅞" OD and 20” Length.

Features and Benefits of Pentek Filter Housings

  • Slim design reduces space required for installation without sacrificing capacity
  • Available in clear or opaque sumps
  • Leak-proof seal

NSF Certified
Pentair 158204 is Tested and Certified by NSF International to NSF/ANSI Standard 42 for material and structural integrity requirements.


20" Filter Housings Specifications

Part #: 158204
Brand Name:

Pentek Pentair
US Filter
Filter Housing Dimensions: 4.83" Dia. × 21.88"H 
For Filter Size: (Nominal) 20" Standard
Fits Filter
Cartridge Dimensions:
2" to 2.875" OD
20" Length
In and Out Connections: 1/2" FNPT
Housing Body (Sump) Color: Blue
Housing Cap Color: Black
Housing Cap Style: Traditional (Rib Cap)
Pressure Relief: Yes
Initial ΔP @ Flow Rate: 2 psi @ 5gpm
Maximum Pressure: 125 psi (8.8 kg/cm2)
Temperature Rating:

Housing & Cap Material: Polyropylene
O-Ring Material: EPDM
Replacement O-Ring: 151121
Filter Wrench (not included): 150539

Water Filter Housings Rib Cap vs. Flat Cap
158204 is Rib Cap Style.  Color shown here does not necessarily match color of product.

Popular Filters & Installation Accessories for use with 20" Standard Housings

Applications for Filter Housings for Water Filtration Cartridges

  • Home Drinking Water
  • Point of Use  (POU) RO Systems
  • Under the Sink/ Under the Counter RO Systems
  • Whole-House Filtration
  • Point of Entry (POE) Filtration
  • Commercial RO Pretreatment
  • Residential RO Pretreatment
  • Residential RO Post Treatment
  • Refrigerators
  • Ice Makers
  • Factory
  • Swimming Pool
  • Restaurant
  • Farm Irrigation
  • Carbon Filters
  • Sediment Filters
  • Deionization Filters
  • Specialty Filters

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