Windstorm - Hurricane Guide Choose your Design Category: Note: Design pressure must be calculated for each opening by the Architect or Design Professional overseeing the project. Also, the design pressure must be supplied on the order submitted to the factory along with the appropriate FL# for each opening. +/- 50 +/- 57 +/- 60 +/- 62 +/- 70 +/- 72 +/- 80 +/- 85 +/- 100 +/- 115 +/- 150 Texas Department of Insurance Link to Florida Building Code Website