Pentek 158110 Traditional Slim Line Filter Housing 3/8 NPT 5-Inch Under Sink Blue | Pentair Pentek

Overview

The Pentek 158110 Slim Line filter housing brings a compact, space-conscious filtration solution to under-sink setups and other tight installations. Built with reinforced polypropylene and a distinctive blue cap, this 5-inch housing accommodates standard 5" x 2.5" cartridges while preserving filtration capacity in a slim footprint. The transparent sump option lets you monitor flow and cartridge life at a glance, helping you plan timely cartridge changes.

Key benefits

• SLIM DESIGN minimizes space requirements without sacrificing filtration capacity
• FITS ALL 5" x 2.5" standard replacement cartridges for broad compatibility
• CLEAR SUMP HOUSING enables on-site observation of flow, cartridge life, and performance
• OPTIONAL PRESSURE RELIEF BUTTON eases cartridge replacement by venting pressure
• LEAK PROOF SEAL helps maintain reliable filtration performance

Materials, mounting, and connector options

The housing features a blue reinforced polypropylene cap and a rugged body designed for long-lasting residential use. Four bosses molded into the cap provide versatile mounting options for secure installations. It supports 3/8" NPT connections, with additional size options available in related models.

Applications and suitability

Opaque and clear Slim Line housings are suitable for undersink and countertop residential filtration, pre- and post-reverse osmosis stages, RV filtration, foodservice applications, and humidifying systems. The clear version is ideal when visual inspection of flow and cartridge life is helpful in routine maintenance.

Maintenance and installation tips

• Inspect cartridge life through the clear sump before replacements
• Relieve pressure with the relief button prior to cartridge changes
• Ensure a secure, leak-proof seal during reassembly

Compact yet capable, the Pentek 158110 offers a practical filtration solution for tighter spaces where dependable, straightforward filtration is valued. Its combination of space efficiency, cartridge compatibility, and a visual sump makes routine maintenance simpler, while the durable materials support quiet, long-term operation.