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Marvin Next Generation Ultimate Double Hung Round Top

The Next Generation Ultimate Double Hung Round Top will add traditional arching and elegant lines to your home or historic preservation project. These versatile windows can range from a large dramatic focal point to a subtle accent to a roof line to enhance your home design.

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With Marvin Coastal Complete, coastal residents no longer have to sacrifice beauty for performance. Designed with the coast in mind with:

  • High-quality exterior cladding
  • Standard AAMA 2605 finish
  • Durable Fluropon® paint finish
  • All exterior fasteners are corrosion resistant

Options available with a DP rating +/-65

The Next Generation Ultimate Double Hung window with clad exterior is also available as a Marvin StormPlus product, certified for IZ3. Marvin StormPlus products are designed and certified for specific coastal codes. These products feature reinforced frames and laminated glass. See more here.

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Energy Information Finder

This tool provides some of the most common options on windows and doors and related NFRC certified values.

This tool is a guide only and does not reflect variations resulting from features and options not included in the tool. For more information about the energy efficiency of specific products and options, please contact your local Marvin sales representative.

The National Fenestration Rating Council (NFRC) has developed and operates a uniform national rating system for the energy performance of fenestration products, including windows and doors. NFRC does not recommend product and does not warrant the suitability of product for any specific use. For additional information regarding this rating system, see

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

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