who are the largest residential window manufacturers
While such companies as the Formosa Group, VKR and YKK are included, they are part of the Top 100 because they have residential window, door or skylight manufacturing operations in North America.
Among those companies moving up in this year's Top 100 were Champion Window & Patio Room. The manufacturer and installer of replacement windows and other products moves up from the Top 100âs $200 million to $300 million sales range category this year to the $300 million to $500 million category.