Vanguard’s Unique Features

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It’s What’s Inside that Matters.

FiberCore® – Structural Technology – For additional strength and durability.

UltraCore® – Insulated Window System – Polyurethane insulated windows for indoor comfort and overall, top-quality window performance.

SecureSeal™ – Meeting Rail System – A fiberglass structural core with high performance polyurethane insulation, with a triple weatherstrip barrier

WindBlock™ Weatherstripping – This system stops wind and air by way of three, continuous layers of weatherstripping featuring a center double mylar fin for further protection. This sealing system blocks even the smallest amounts of air and ensures that your home’s comfort is not compromised.