*PLUMBERSSTOCK EXPERT* responded:
Hi! Thank you for posting a question under the Manifold 3 100DVF. The inlet of this Manifold systems is 1-inch the valves and outlets are also 1-inch. Here's the Specification Sheet and the Manual for more details. If you're interested in purchasing the Dura manifold 3-valve set-up, just click the"Add to Cart" button, enter your zip code and you'll be all set or call one of our customer support specialists at 435-868-4020 for assistance in placing your order. If E-mail is your preferred method of contact, you can email them at email@example.com. Thank you for visiting PlumbersStock.com. Hope you have a wonderful day!