ATLANTA--(BUSINESS WIRE)--BlueLinx Holdings Inc. (NYSE: BXC), a leading U.S. wholesale distributor of building products, today announced the launch of TruExterior® Siding and Trim by Westlake Royal Building Productsâ"¢ across 12 BlueLinx markets, including six of the top 50 U.S. metropolitan statistical areas. This coordinated expansion significantly broadens access to TruExterior's highperformance polyash siding and trim, reinforcing BlueLinx's commitment to growing its specialty product portf. ...