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Marvin Certified By Passive House Institute U.S.


Ultimate Casements and Ultimate Awnings are featured in this award-winning home. Now Ultimate Casements are certified passive.

Marvin Windows and Doors is pleased to announce that it has received certification from the Passive House Institute U.S. (PHIUS) for its Ultimate Casement window.

Now architects, builders and homeowners seeking a passive solution can turn to a trusted name for an American-made product. Marvin’s innovative passive window option combines the beauty of warm wood interiors with exceptional performance, all backed by a century-old heritage of quality and service.

“Windows are a key consideration in passive building design,” said Christine Marvin, director of marketing for Marvin Windows and Doors. “Because our products are made in the USA, Marvin can offer builders a shorter lead time than international manufacturers. And our extensive independent dealer network means we can support the project from the time it’s drawn up until after installation. This is another great example of Marvin working one-on-one with its customers to deliver the perfect windows for each project along with high-tech building solutions.”

Marvin’s Ultimate Casement offers a 10-year warranty on parts and workmanship and 20 years on glass. Marvin also achieves lead times of less than 8 weeks — unlike European providers that often specify much longer lead times.

Marvin’s Clad Ultimate Casement meets PHIUS certification in two zones: Zone 3 and Marine South, per the International Energy Conservation Code (IECC) map. The Ultimate Casement is available with tripane glass in a 1-3/8” profile or quad glazing with Heat Mirror® technology* in a 1” profile.

For the Ultimate Casement tripane, the product’s performance features include:

  • 1 ?” glass makeup with a combination of Lo?²-272®, Lo?-180and Lo?-i89™ with Argon insulating gas fill
  • U-value of 0.18
  • Solar Heat Gain Coefficient of 0.349
  • Air infiltration of less than 0.01 cfm/ft?2

For the Ultimate Casement with quad glazing and Heat Mirror, performance features include:

  • 1” glass make up, Heat Mirror® quad glazing, and a combination of Lo?-180L, HM88, and Lo?-i89™ with Krypton gas
  • U-value of 0.19
  • Solar Heat Gain Coefficient of 0.420
  • Air infiltration of less than 0.01 cfm/ft?2

“With our long history of custom manufacturing and our skilled, experienced work force, we’re able to craft windows that will meet the highest standards of energy efficiency while allowing design freedom,” said Mike Laufman, senior manager of Marvin Signature Services, which offers one-on-one design and manufacturing support for custom projects.

The Ultimate Casement comes in a virtually endless range of styles and sizes. With six wood species options and nine factory-applied interior stain and paint finishes, customers can create a window to fit any home. The Ultimate Casement offers 19 standard exterior clad colors with an industry leading AAMA 2605 finish as a standard and an extensive range of custom colors.

Marvin Windows and Doors also offers a wide range of additional windows made in the USA that will meet both the strict European and U.S. standards for passive building. Certifications on those products are pending. Visit for full information on all our products.

*Heat Mirror is a trademark of Eastman Chemical and is a glazing system that leverages suspended-film technology to provide varying levels of solar control and thermal insulation.