About Cardinal FG Portage

We are a division of Cardinal Glass Industries, the largest manufacturer of residential insulated windows in the U.S.  We produce flat glass from raw materials by floating molten glass on molten tin, which is used for windows, aquariums, picture frames, and mirrors.

Our technicians are encouraged to make decisions, solve problems and help create the kind of workplace they enjoy and are proud to be a part of.  Thanks to our employees, Cardinal FG-Portage provides superior quality products with excellent customer service to maintain our success and leadership in the glass industry.

Come see our high-end manufacturing environment. Bright, clean, and clear – just like our product.

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