Design Pressure Ratings Explained for Clearwater Windows and Doors
What A Design Pressure Rating Really Means A design pressure rating, often shortened to DP, tells you how much wind load a window or door assembly is built to resist. It is a technical rating, not a sales phrase, and it says more about performance than about marketing. Around Clearwater, the combination of wind, rain, and coastal air puts real stress on fenestration products, especially on homes closer to the Gulf or open water. When a product is underspecified, the r