Brita On Tap Installation
Remove existing aerator from faucet spout. Select the matching adapter from the 4 included options: adapter A (most common US residential external thread), adapter B (most common US residential internal thread), adapter C (metric external), adapter D (metric internal). Thread the selected adapter onto the faucet spout until snug (hand-tight -- do not use tools on the plastic adapter). Snap the Brita On Tap filter housing onto the adapter -- it clicks into place without tools. Insert the filter cartridge into the housing (green label up). Run filtered mode for 5 minutes to flush the carbon before first use. Total installation time: 5 minutes.