Safeguard Hurricane Protection PNL-W-047 0.050 Aluminum Storm Panel, 15-Inch x 47-Inch Panels are capable of withstanding 1,000-Pound of force per Square Inch 2-Inch key holes at each end allow for easy installation and multiple mounting options Panels stack easily for convenient storage Rolled from .050 thick aluminum Miami - Dade County approved NOA No. 12-0403.02