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From education and mixed-use to retail retrofits, the enhanced Series 3000 XT and 6000 XT storefront systems from Oldcastle BuildingEnvelope are engineered for performance-driven projects that demand more -- without requiring more from the installer.
These upgraded thermal storefront systems deliver up to 25% better thermal performance over standard double-glazed storefronts, achieving U-factors as low as 0.20 using thin triple IGUs -- all while maintaining a standard 1" glazing pocket.
With familiar center-set glazing, shear block or screw spline assembly, and a high-performance sill receptor, they install like the systems you already know. Available in two depths to fit project needs, the 3000XT (2" x 4-1/2") and 6000XT (2" x 6") offer a smarter path to meeting today’s energy codes -- with no extra steps on the jobsite.
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