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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The Marview Window was available in the 1960s and featured a stationary top sash...

The Marview Window was available in the 1960s and featured a stationary top sash and operating bottom sash. #TBT #HandcraftedinAmerica #Marvinwindows

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