W.W. Grainger (Chicago) opened a 17,500-sq.-ft. branch in Troy, OH; a 30,000-sq.-ft. branch in Dulles, VA; and a 25,000-sq.-ft. branch in Montgomeryville, PA. A broad line supplier of facilities maintenance products, it serves businesses and institutions in North America from nearly 600 branches, 18 distribution centers and multiple Web sites.