Complete specifications for HVHZ-compliant louvered windows. Compare operable, fixed, and hurricane louver systems with ventilation rates and design pressure requirements.
Side-by-side specifications for HVHZ-compliant louver systems.
Adjustable ventilation
Constant airflow
Wind-driven rain
Yes, hurricane-rated louvers can meet HVHZ requirements. They must be tested as complete assemblies to ASTM E330 for structural performance and TAS 201/202/203 for impact and cyclic pressure. Several manufacturers offer NOA-approved hurricane louvers.
Hurricane louvers achieve higher wind ratings but have lower free area (30-40%) compared to standard louvers (50-60%). This reduced airflow must be factored into mechanical system design. Larger louver banks may be needed to maintain required CFM.
Yes, some manufacturers offer impact-rated louvers that pass both the large and small missile tests. These are typically heavier construction with reinforced blades and frames. They're required for openings in HVHZ that aren't protected by shutters.
Hurricane louvers cost approximately 50-100% more than standard louvers. Standard fixed louvers run $40-65/SF while hurricane-rated systems cost $85-140/SF. The premium reflects heavier materials, testing costs, and NOA certification.
PE-stamped wind load calculations specific to your louver requirements and building location.
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