Save with Auto-Ship

Get the product you need, exactly when you need it, delivered right to your door. No more searching for the right part number, we've got you covered. Plus, you'll save $$ on every order and shipping is on us. Learn more

Save Money

Free Shipping*

Choose Frequency

*Free Shipping available in the contiguous US

Pentek 158204 #20 Slim Line 1/2-Inch Blue Filter Housing with Pressure Release

Price $45.99 List Price Price $65.99 Save 30%
Availability: Discontinued
Choose a quantity
  • 1Filter$45.99 
  • 3Filters Price $43.27 each
  • 6Filters Price $41.39 each
The Pentek 158204 filter housing has 1/2-inch NPT inlet/outlets. The Pentek 158204 slim design reduces space required for installation without sacrificing capacity. FDA Grade. The Pentek 158204 has a leak-proof seal with a top-seated o-ring. The housing has four bosses molded into the cap for mounting purposes. The Pentek 158204 Slim-Line filter housings are an excellent choice for low flow applications and when space and chemical compatibility are concerns. The water filter cartridge is not included with the housing. This allows you to purchase the best water filter for your water supply. The Pentek 158204 is molded from rugged reinforced polypropylene. The Pentek 158204 can be used in undersink, in countertop residential filtration, in pre- and post-reverse osmosis filtration, recreational vehicle filtration, and food service and humidifying systems. The Pentek 158204 housings have a black, reinforced polypropylene cap with a pressure release button. The Pentek 158204 filter housing uses 20-inch L x 2.5-inch W water filters. Two number 20 Slim-Line housings can be connected with a pipe nipple or pipe union. There are several pipe nipples available that can be used to connect two number 20 Slim-Line Housings. Use the NP-12 pipe nipple to connect two number 20 Slim-Line Housings with 1/2-inch inlet/outlets.
Package Qty1
Advertised Size (in)20 x 2-1/2
Flow Rate (gpm)5
Flow Rate (lpm)18.93

Reduced Contaminants


  1. Easy to install number 20 Slim Line Opaque Water Filter System. The housing is 21-7/8-inches x 4-3/8-inches (556 mm x 111 mm). You will need to allow slightly more room in addition to the housing dimensions for installation
  2. 1/2-inch NPT inlet/outlets for easy installation on a cold water line
  3. An SL-BR mounting bracket is recommended for installation of the filter housing