 CARY, N.C.--BUSINESS WIRE--Cornerstone Building Brands, Inc. NYSE: CNR, the largest manufacturer of exterior building products in North America, has acquired Prime Window Systems Prime Window or the Company. Headquartered in Denver, Colorado, Prime Window serves residential new construction and repair and remodel markets with energy efficient vinyl window and door products. The Company has approximately 300 employees at manufacturing locations in Colorado and Washington. The acquisit 