Search, filter, and compare glass products from Vitro, Guardian, Cardinal, Pilkington, AGC, and Saint-Gobain, all with published COG performance data.
Data basis: All performance values are center-of-glass (COG), the standard measurement reported on manufacturer product data sheets. COG values do not account for the frame. Whole-window NFRC values (required for energy code compliance) will be different and must be obtained from the fenestration manufacturer's NFRC-certified product listing. Values marked ~ Verify are from published industry literature and should be confirmed against current manufacturer specifications before specifying. Glass products and coatings are updated regularly by manufacturers, always check the current data sheet.
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36 products
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All values are COG (centre-of-glass). Conversion: W/m²·K = BTU/hr·ft²·°F × 5.678
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Important disclaimer: Performance values in this database are center-of-glass (COG) values sourced from published manufacturer product data sheets and industry references. They are provided for educational and comparative planning purposes only. COG values do not represent whole-window performance, NFRC whole-window values, which are required for energy code compliance, will always differ based on the specific frame and spacer system used. Glass manufacturers update product lines regularly; some products listed may have been discontinued, reformulated, or superseded. Always verify specifications against the current manufacturer data sheet before procurement or specification. LiteSpec makes no warranty as to the accuracy or currency of the data in this database.