 CARY, N.C.--BUSINESS WIRE--Cornerstone Building Brands, Inc. NYSE: CNR the Company, the largest manufacturer of exterior building products in North America, announced today that it has completed its acquisition of Cascade Windows Cascade for a cash purchase price of approximately 245 million, subject to customary adjustments. Cascade is a leading independent manufacturer of energy-efficient vinyl windows and doors serving the residential new construction and repair and remodel mark 