Chicago Faucets 387-CP Inside Sill Fitting

Hello there! Thank you for your question about the Delta 72020-AR Arctic stainless air gap. This Delta air gap is installed to prevent backflow or back-siphonage of non-potable water into potable water systems. It prevents drain water from the sink from getting back into the dishwasher possibly contaminating dishes. This Delta air gap is typically installed on the counter nearest to the dishwasher. We hope this information proves helpful. To order, feel free to click "Add to Cart" and fill in the required fields. Thank you for choosing PlumbersStock. Have a wonderful day!

Good day! Thank you for your interest in the Delta 72020-AR kitchen air gap. The mounting hole required for this air gap is between 1-1/4" (32 mm) to 1-5/8" (41 mm). For reference, please check out this specification sheet. To purchase this air gap, simply click the “Add to Cart” button and provide the information needed. Thank you for visiting PlumbersStock. Have a great day!