The National Fenestration Rating Council (NFRC) energy performance label can help you determine how well a product will perform the functions of helping to cool your building in the summer, warm your building in the winter, keep out wind, and resist condensation. By using the information contained on the label, builders and consumers can reliably compare one product with another, and make informed decisions about the windows, doors, and skylights they buy.

NFRC adopted a new energy performance label in 2005. It lists the manufacturer, describes the product, provides a source for additional information, and includes ratings for one or more energy performance characteristics.

NOTE: All energy performance values on the label represent the rating of windows/doors as whole systems (glazing and frame).

American Architectural Manufacturers Association (AAMA) is the source of performance standards, product certification and educational programs for the fenestration industry.

Mikron Industries is a leading manufacturer of vinyl and composite window and door systems and extrusions.

Window & Door Manufacturers Association (WDMA)

WDMA is the preeminent trade association for the window, door and skylight industry. Our member companies are the leading U.S. and Canadian manufacturers of high performance products for the domestic and export markets.

We develop industry standards and test methods, certify products to industry standards, represent the industry before building code and regulatory bodies, conduct research on the fenestration industry, collect industry data, conduct educational programs for our members and serve as an information clearinghouse for specifiers, architects, builders, contractors and consumers.

By their involvement in WDMA, member companies demonstrate their commitment to quality design and construction standards. To that end, consumers enjoy the beauty, ease of operation and energy-saving performance of superior products.

Cardinal Glass Industries is a management-owned S-Corporation leading the industry in the development of residential glass for windows and doors. We have grown to more than 5,500 employees located at 27 manufacturing locations around the United States.

At Cardinal, we try to maintain a clear vision: design and fabricate the most advanced residential glass products in the industry.

We start with a heavy investment in research and development. Our twin R&D centers in Minnesota and Wisconsin provide the basis for new advances in glazing fenestration.

We turn around those fresh ideas into useful products that regular homeowners can use. We provide a turnkey solution to window manufacturers: whether it starts with insulating glass, coated, laminated, tempered or just plain float glass, it is all designed to provide the latest in applied glass science.

Residential Windows, Doors, and Skylights:

(http://www.energystar.gov/index.cfm?c=windows_doors.pr_windows)

Want more from your windows? Ask for ENERGY STAR.
ENERGY STAR-qualified windows, doors, and skylights save you energy and money, increase the comfort of your home, and protect your valuable possessions from sun damage. They are also better for the environment because lowering your energy use means less air pollution from power plants.

US Dept. of Energy
http://www.energy.gov/forconsumers.htm

Homeowners and renters know saving energy means saving money without sacrificing comfort. There are many things you can do to save energy in your current home, or when designing and building a new energy-efficient house. Whether you choose no/low cost improvements or invest in long-term energy saving strategies, the following sites can help you choose what is best for your energy picture.

... Invest a little extra money in an energy-efficient product and save more money in the long run. If you're building an addition to your home, double-paned windows and proper insulation will reduce your heating and cooling costs, and strategically placed windows will provide day lighting.

(Same as above)

American National Standards Institute, Inc.

American Society For Testing and Materials

Insulating Glass Manufacturer's alliance

International Code Council

(Same as above)

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