Extra-duty plastic series while-in-use covers are easy to install and with a gasket, mounting screws, base and cover assembly and inserts for a variety of applications. Heavy-duty UV stabilized polycarbonate construction ensures long-lasting durability. Double gang models 6 inserts provided with all models that allow each model to meet multiple installations (up to 70 configurations). 2 round inserts accommodate from 1.375 to 2.656 inch plugs for the 30 or 50 A applications. Reinforced hinge pin designed to exceed 40 lb hinge hang or stress test. Impact rated 12 lb impact test to ensure cover remains in-tact. Lockable hasp all models accept up to 0.25 inch diameter shank. Meets requirements for cold impact testing -60°F.