Energy Data

This tool provides some of the most common options on windows and doors and related NFRC values. For more information about the energy efficiency of specific products and options, please contact your local Marvin sales representative.

See Energy Efficient Windows and Doors for further information on this topic.

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Did you know? We use logging waste to heat our 2 million square Warroad, Minn. f...

Did you know? We use logging waste to heat our 2 million square Warroad, Minn. facility. #EarthMonth http://bit.ly/Qq0Yot

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