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Each undermount sink we offer is made with flanges that sit beneath the surface of your countertop so you can get the same reliable support of a drop-in unit without a metallic appearance. A commercial undermount sink is great for a countertop of any material as well, including expensive materials like granite. Plus, with their coved corners, cleaning these undermount sinks takes a matter of moments. For additional products to go with your sink, check out our drain accessories, weld in sinks, and drop-in sinks. If you're wondering where to buy undermount sinks, we have a large selection of undermount sinks for sale at the lowest prices.