Do it 7/8" x 5/8" Chrome Dishwasher Air Gap features a 5/8" O.D. inlet and a 7/8" O.D. outlet, designed to effectively prevent pressure build-up and protect your home's potable water supply from contamination. This dishwasher air gap includes automatic anti-siphon protection to ensure safe and reliable operation. The product comes carded for easy handling and installation. Model Number: