Kraus KFF Filter Faucet Finish Options and Compatibility
Kraus KFF series dedicated filter faucets are sold separately from Kraus kitchen faucets at $50--$120 per finish: Chrome (KFF-100CH), Stainless (KFF-100SFS), Matte Black (KFF-100MB), Brushed Brass (KFF-100BB), and Spot Free Stainless (KFF-100SFS). The Kraus KFF faucets use a 1/4" push-connect inlet fitting compatible with standard RO system tubing (all APEC, iSpring, Waterdrop, Brondell, and Frizzlife RO systems). Replace the Kraus KFF O-ring seal every 3--5 years if the base develops a drip -- O-ring kits ($3--$8) are standard plumbing sizes available at any hardware store. The KFF faucet body is warranted by Kraus for lifetime against manufacturing defects -- the Kraus Lifetime Warranty applies regardless of the filter brand connected to the faucet.