Do you sell under the sink units in the UK? October 14, 2020 15:08 We unfortunately do not. We haven't worked out the fittings just yet, but we are working on it! Related articles Install Video for the Smart Shield & Dedicated Faucet Kit I just installed my Smart Shield, now the water coming out is cloudy. What's going on? Is the filter NSF/ANSI certified? Do I have to drill any holes?