About Mitten Building Products 
Mitten is the original Canadian manufacturer and market leader of vinyl siding. Our continued focus on operational excellence has set the industry benchmark for service, quality, performance and design, backed by the best in class life time warranty. 
 
As a coast to coast distributor of premium exterior building products we are the link between architects, builders and installers providing an endless variety of business and design solutions. As part of the Cornerstone Building Brands family, we are the largest manufacturer of exterior building products in North America.
 
Our Canadian made vinyl siding has the largest and boldest colour pallet in the industry and our colour matched aluminum, shake, stone, and accessories provide the perfect complements and finishing touches to any project. Our products maximize curb appeal and benefit installers by minimizing labour requirements. 
 About Cornerstone Building Brands
Cornerstone Building Brands is the largest manufacturer of exterior building products in North America. Headquartered in Cary, North Carolina, the organization serves residential and commercial customers across new construction and repair & remodel market. As the #1 manufacturer of windows, vinyl siding, insulated metal panels, metal roofing and wall systems and metal accessories, Cornerstone Building Brands combines a comprehensive portfolio of products with an expansive national footprint that includes more than 21,000 employees at manufacturing, distribution and office locations throughout North America.