QMP Non-Air Gap Drinking Water Faucets are Lead Free and Made in USA. They are an excellent quality faucet at an affordable price. A non Air-gap faucet can be used for a fitration system or reverse osmosis system when there is a remote air-gap or waste water drains to open drain. Air-Gap faucets are recommended for reverse osmosis systems in normal installation. Requires 7/8" Hole. Available in avariety of colors and finishes.