I put in an EWS water filter which comes with its own faucet. I'm super happy with the unit. I wanted more of a set at the sink so I found a filter faucet to coordinate with my KWC Systema pull down. (Scroll down for close up).
Here's a link to the filter system.
Here is a link that might be useful: EWS & Faucet
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Bathroom barn door
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