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THINGS TO CONSIDER
When choosing windows for their energy efficiency, it is important to select a glass package that meets the performance requirements for your climate zone. As such, all of Grandura’s innovative glass packages offer exceptional energy efficiency and are designed to accommodate the particular needs of homeowners throughout the United States.
*Annual energy costs are based on the national average for a 2000 square-foot, single-story home with 300 square feet of vinyl-framed windows, equally distributed on all four elevations. Energy costs are calculated using Lawrence Berkeley Laboratory’s Window 5.0 thermal analysis program and NFRC approved spectral data and environmental conditions. Actual costs and savings may vary.
LoĒ3-366, a Definite Advantage
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In summer months, LoĒ3-366 glass keeps cool air inside while keeping hot air outside, reducing solar heat gain by 64% compared to ordinary glass.
In winter, LoĒ3-366 glass keeps warm air in and cold air out for optimum comfort, efficiency and humidity control.
Year-Round, LoĒ3-366 glass also blocks out 95% of UV rays, which can fade carpet, draperies and artwork.
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 Grandura vinyl products are designed to meet specific GreenSpec® criteria set forth by BuildingGreen, Inc.
• Pre-consumer recycled content.
• Exceptional durability and low maintenance requirements.
• Reduced heating and cooling loads.
• Products do not release significant pollutants into a structure.
• Noise reduction.
 Our 30% Energy Savings Pledge*
In addition to providing beautifully designed, high performing window systems, we pledge a savings of at least 30% of “Energy Consumption” for heating and cooling of a single family dwelling with a complete installation of Grandura windows.
*This pledge is based on energy (fuel) consumption, not the cost of the energy, and is valid for a 12-month period.
Tempered Glass (Safety Glass)
• Four to five times stronger than normal glass.
• Provides protection against break-ins and penetration from airborne debris during violent winds.
• When broken, glass shatters into small, oval-shaped pebbles, eliminating the danger of sharp edges.
Laminated Glass
• For the ultimate in efficiency and security, choose laminated glass.
• Blocks over 99% of the sun’s damaging UV rays.
• For added safety, the laminated glass will not fall out inside the home if the window is struck with
force.
• Helps reduce noise transmissions.
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