PHOENIX--(BUSINESS WIRE)--Western Window Systems, a premier door and window manufacturer, today announced it has received an investment from PWP Growth Equity, a private equity fund affiliated with Perella Weinberg Partners that invests in leading growth-oriented, lower middle market companies. PWP Growth Equity is partnering with Western Window Systems CEO Scott Gates and his current management team for this transaction; Jason Funk and Scott Leach, previously executives at Western Window Syste