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Remove your old showerhead. You may need to use an adjustable wrench to loosen it
Wrap the included thread tape around the threads 4-5 times
Insert the included washer into the back of the Showerhead
Install your new Serei Purifying Showerhead! After hand-tightening, use an adjustable wrench and tighten 1/4 turn until snug. Don't overtighten!
Conveniently receive a fresh filter every 3 months with Auto-Ship.