We have an easy kit, with complete instructions, that will allow you to convert any countertop filter to undersink use. The kit consists of a ledge faucet, an inlet valve, tubing, and the fittings you'll need, as well as complete instructions.
When you order, you'll need to tell us if the cold water tube going up to your sink's cold water faucet is solid copper or if it's a flexible tube.
(whole house & well units)