A hurricane window (also known as an impact window or impact window, and frequently generally known as an impact window) is created to withstand the pressure of a hurricane, like superior winds and projectiles traveling at high speeds. Find every little thing you need to know about window jambs, like http://news.dovernewsnow.com/story/537289/highperformance-impact-windows-built-to-meet-florida-building-code-standards.html