John Guest - Speedfit Twist & Lock Compression Female Connector, Push to Connect Plastic Plumbing Fitting 3/8" OD x 9/16"-24 UNEF Omnipure (E5686) 12"x2.5" Diameter E-Series GAC & 4 oz. Phosphate - Scale Inhibitor though both serve the QT

though both serve the QT RO product line

Model Number Whatts-HD4500BB34PR Manufacturer Watts Housing Size 10 inches Cartridge Size 2

leak-free connection when installing your countertop water filtration system

Know what's in your water before you drink it

John Guest - Speedfit Twist & Lock Compression Female Connector, Push to Connect Plastic Plumbing Fitting 3/8" OD x 9/16"-24 UNEF Omnipure (E5686) 12"x2.5" Diameter E-Series GAC & 4 oz. Phosphate - Scale Inhibitor though both serve the QTJohn Guest Speedfit Twist & Lock Push to Connect Female Connector 3 8" OD x 9 16" 24 UNEF compression fitting for copper, CPVC, and PEX tubing. No tools, torches, or glue required. IAPMO Approved NSF Certified Lead Free Behind Wall Safe WHY IT WORKS Push fit technology with collet locking system Twist & Lock Security Unique collet locking system holds tubing firmly in place. Twist feature provides added connection security for permanent installations.