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Description The DuPont™ AirGuard® Reflective is a 100% airtight vapor barrier engineered to optimize building thermal performance and significantly enhance energy efficiency. Specially designed for use alongside Tyvek® Reflex products, it is ideal for improving U-values within structures. This low-emissivity barrier offers superior resistance to both water and vapor, reflecting up to 95% of radiant heat to minimize interstitial condensation and boost thermal efficiency. Features High Water Vapor Transmission Resistance (sd) 2000m Reflective Surface Superior Mechanical Strength BBA-Approved Certification