 CARY, N.C.--BUSINESS WIRE--Cornerstone Building Brands, Inc. NYSE: CNR the Company, the largest manufacturer of exterior building products in North America, today announced the joining of Brigette Gage as Senior Vice President, Supply Chain, and Keith Scherzer as Senior Vice President, Operations - U.S. Windows Group to the supply chain and operations senior leadership team under the direction of James Jim Keppler, Executive Vice President, Operations. Ms. Gage is responsible for prov 