Cleveland--Penton Media Inc. on Tuesday said it has acquired Contractor, a monthly magazine for the domestic plumbing contractor market, and Expo Instalaciones Para la Construccion, a trade show for the construction installation market in Latin America. Terms of both transactions weren't disclosed. Both the magazine and the trade show will become part of Penton's Industry Media division. The magazine was acquired from Cahners Business Information and underscores Penton's desire to wed Contractor with its existing portfolio, including Contracting Business. The trade show, which has four events this year, was bought from Agora Internacional SA de CV of Mexico City.