Blackman Plumbing Supply Co. has been providing plumbing products since 1921. The company offers bathroom and kitchen faucets, baths, showers, basins, sinks, doors and toilets. It provides bathroom furniture, architectural hardware, counter surfaces, and kitchen and bath appliances. Blackman Plumbing Supply also features tile and stone products. The company deals in products from such manufacturers as Ginger, Kohler, Valsan, Americh, Kindred, Moen and GS Concepts. The company has more than 10 showrooms throughout Manhattan, Queens and Long Island, N.Y. Its staff assists customers with design and consultation services for kitchen and bath projects. Blackman Plumbing Supply maintains a location in Bethpage, N.Y.