Contractors Building Supply Inc.
Solar Energy   Windows   About Us
Contractors Building Supply, Inc. is committed to providing superior products for residential, commerical and community solar project. Strengthening that committment in 2013 CBSI has become the exclusive US manufacturer for Sonali Energees USA LLC. to assemble and test highly effiecent solar panels produced in Michigan.   Learn More>   Contractors Building Supply, Inc. believes in providing quality windows built in America and are Energy Star qualified. In 2013 Thermolock Mfg. was acquired by Vinylmax, LLC. of Hamliton, OH and Vinylmax like CBSI believes in high quality energy efficent windows Produced in the USA.   More>   Located in the Village of Copemish, Contractors Building Supply, Inc. has been in the renewable energy business for nearly 40 years. We have a qualified team to meet any of your renewable energy and window needs.   More >


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