The Science Behind Energy-Efficient Bifold Windows in Chicago’s Cold Climate
Heavy-duty bifold windows are designed to support heavy, double- or triple-pane insulated glass units (IGUs) filled with argon gas and treated with Low-E (low-emissivity) coatings. When high-performance glass is combined with a thermally broken aluminum frame, the entire system delivers exceptional airtightness and weatherproofing.
The skinny
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