Greenheck is the first mechanical louver manufacturer to have louver products AMCA Listed as Impact Resistant Louvers and AMCA Listed as High Velocity Rain Resistant and Impact Resistant Louvers. The AMCA Listing designation is relative for louvers that are applied within the designated Hurricane Prone Regions, which includes, but is not limited to, Florida as required by the new Florida Building Code (AMCA 540 and AMCA 550) and the upcoming International Building Code version 2012 (AMCA 540 ...This story is related to the following:Louvers | Functional Louvers