For sinks, faucets, tubs, and all other plumbing supplies we use the Water Concepts Showroom in Waukee, Iowa. Here's their web site link www.waterconcepts.net/. Click on their Menu button on their site to see the products they carry.
To visit their showroom, call Deb Burr. Deb is one of the areas leading experts concerning plumbing fixtures.
Be sure to make an appointment first before you go in, because it's a wholesale showroom, not retail. In Waukee, their phone number is: