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Pentek 158138 1/4-Inch #5 Blue/Black Water Filter Housing

Price $31.99 List Price Price $45.99 Save 30%
Availability: In Stock
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  • 1Filter$31.99 
  • 3Filters Price $30.10 each
  • 6Filters Price $28.79 each
The Pentek 158138 5-inch housing is perfect for applications in RVs or campers, boats, small sinks, countertop residential filtration, pre- and post-reverse osmosis filtration, or humidifying systems. The Pentek 158138 Slim-Line water filter housing has outstanding chemical compatibility and is ideal for use in a variety of low flow applications. The water filter cartridge is not included with the housing--this allows you to purchase the best water filter for your water supply. It uses any 5-inch L x 2.5-inch W sediment or carbon drinking water filter. The Pentek 158138 housing has 1/4-inch inlet/outlets in the black reinforced polypropylene cap. Leaking is prevented by the dynamically sealing o-ring. The O-Ring should be replaced every couple of water filter changes to prevent leaks. Two number 5 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 5 Standard Housings. Use the NP-14 pipe nipple to connect two number 5 Housings with 1/4-inch inlet/outlets.
Package Qty1
Used In BrandsPentek
Manufacturer's IdSLIM-14-WPR5
Actual Size (in)7 3/8 inches (length) x 4 5/8 inches (outside diameter)
Actual Size (cm)18.73 x 11.7475
Outside Diameter (inches)4.625
Materials of ConstructionO-Ring: Buna-N, Cap: Reinforced Polypropylene, Housing: Polypropylene (Blue)
Operating Pressure (psi)30 - 125
Operating Temperature (°F)40 - 125
Operating Temperature (°C)4.4 - 51.7
Flow Rate (gpm)3.00
Flow Rate (lpm)11.36
Fitting TypeNPT
Fitting Size (inches)1/4 inch
Country of ManufactureMexico

Reduced Contaminants

The PENTEK-SLIM-14-WPR5 is comparable with the following part numbers


User Guide


  1. Easy to install Pentek number 5 Slim Line Water Filter System. The housing is 7-inch x 4-3/8-inch (178 mm x 111 mm). You will need to allow slightly more room in addition to the housing dimensions for installation
  2. 1/4-inch inlet/outlet for easy installation on a cold water line
  3. A SL-BR mounting bracket is recommended for installation of the whole house housing