Pentair Pentek 158007 Traditional Slim Line Filter Housing, 3/8″ NPT #10 Under Sink Clear Water Filter Housing with Pressure Relief Button, 10-Inch, Clear SLIM DESIGN REDUCES SPACE REQUIRED for installation without sacrificing capacityFITS ALL 10″ x 2.5″ standard replacement filter cartridgesCLEAR SUMP HOUSING offers on-site examination of flow, cartridge life and performancePRESSURE RELIEF BUTTON for easy cartridge replacementLEAK PROOF SEAL to ensure optimal performance