Popular Science magazine’s Top 100 Inventions

• The Insulator 8100 HM is our best-insulating window, up to 128% more energy-efficient than a standard double-pane window, and 44% to 116% better than one with low E and argon gas. Ask about our fuel savings guarantee.
• Our quietest window, blocking 85% of all outside noise
• Our most exquisite window with a beautiful architectural frame
• Both sashes tilt in for easy cleaning
• Screen and heavy duty locks included
• Lifetime factory guarantee – glass breakage included

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*Standard installation includes removal of old windows. Minimum purchase of 5 windows required.
**UI stands for united inches, meaning the window width plus height (i.e. a 36” x 54” window equals 90 UI; 36 + 54 = 90)

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