"This product is approved as described herein and has been designed to comply with the High-Velocity Hurricane Zone (HVHZ) of the Florida Building Code." HVHZ (156-185mph winds) specifically refers to Florida's Miami-Dade and Broward Counties, areas of greater risk of extreme hurricane-force winds and impacts. Stricter criteria for certification applies. The Miami-Dade NOA seal is known nationally, if not internationally, to building officials, design professionals, contractors and insurers.