What DP Rating Do I Need in Tampa FL for Safe Window Upgrades?
How Design Pressure Rating Works For Tampa Homes For Tampa window work, the number that tells you the most about strength is the design pressure rating. DP rating measures how much wind load a window assembly can resist, both in positive pressure and negative pressure. That matters in Tampa because the issue is not just flying debris, it is the pressure swings a house sees during a storm. A common mistake is assuming "impact" automatically means "strong enough."