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Knapp Supply is a wholesale distributor serving professional tradesman,
contractors, remodelers, and homeowners.

In continuous business since 1874, Knapp Supply has a strong tradition of leadership in the plumbing and building trades industry for eastern Indiana and western Ohio.

Alexander Knapp founded his china and terra cotta pipe business on the border of Ohio and Indiana in Union City. Since that time when indoor plumbing was in its infancy and the gas-boom days was industrializing the area, Knapp Supply has carried on Alexander’s vision of providing the best quality material and merchandise at the most affordable price.

Much like our store, you will find our website divided into four sections: plumbing supplies, industrial supplies, water systems and those plumbing and cabinetry items found in kitchens and bathrooms including kitchen cabinets and bathroom cabinets.

Wyo-Ben, Inc. is a leading manufacturer of Bentonite Clay based products.

the Big Horn Basin region of Wyoming has the richest deposit of bentonite in the world. Wyo-Ben operates 3 processing facilities serving the global marketplace.