*PLUMBERSSTOCK EXPERT* responded:
Howdy, Dan M! Thanks for contacting PlumbersStock.com. The air gap that fits over a 2" PVC stand pipe is the US Water System 195-WSAG-150. This air gap is not yet on our website, but if you're interested in purchasing the US Water System 195-WSAG-150, please contact one of our knowledgeable customer service representatives @ 435-868-4020 between 8:00 am and 7:00 pm MST or through e-mail at firstname.lastname@example.org. They will be happy to assist you with your order. Please don't hesitate to contact us if you have any further question about this product. We thank you for choosing PlumbersStock.com. We are always happy to serve you!