Founded in St. Paul, Minnesota, in 1910, Cole Sewell was a leading provider of storm doors and windows until 1997, when president Fred Sewell retired and sold the company to Pella. An Iowa-based window and door company, Pella operated the Cole Sewell brand as a subsidiary for some time after the acquisition. As of 2015, the storm door line is sold under the Pella brand in its window and door showrooms and in home retail stores nationwide.
Headquartered in Pella, Iowa, Pella has over 6,000 team members and more than 40 manufacturing facilities in the United States as of 2015. Pella's product line includes doors, windows, blinds and shades, as well as a line of smart products that interact with doors and windows.
Storm doors include panels or full sections of window screen material in a separate door that is installed in front of the exterior door of a home. The storm door protects a home's entry and its decorative entry door from the elements in severe weather. In more pleasant weather, the storm door secures the home while allowing the main entry door to remain open. In this case, the purpose of the storm door is to let the sunshine in while keeping insects out.