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The Key to Low U-Factor: Warren's PA66-GF25 Thermal Break Explained for NAFS Energy Compliance

26 November 2025

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featured The Key to Low U-Factor: Warren's PA66-GF25 Thermal Break Explained for NAFS Energy Compliance

    Engineering the Envelope: Warren’s High-Performance PA66-GF25 Thermal Break Strip Explained   Welcome to a technical masterclass from Warren Window Systems, a leading manufacturer dedicated to delivering certified, energy-efficient aluminum fenestration to the North American market (USA & Canada). This video provides an essential, deep-dive explanation of the single most crucial component in high-performance aluminum frames: the PA66 Polyamide Strip reinforced...

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