* Miami-Dade County has the strictest test protocols in the country for wind-borne debris, air and water tests. The Miami-Dade County Notice of Acceptance (NOA) for impact-resistant products is the best way to be sure that a attic fan has been tested and meets all the requirements for hurricane protection in the High Velocity Hurricane Zone (Miami-Dade and Broward Counties). The Florida Building Commission recognizes Miami-Dade NOAs as approved products.