FeaturesHeavy duty UV stabilized polycarbonate construction ensures long lasting durabilityTwo inserts provided with all models that allow each model to meet multiple installationsReinforced hinge pin designed to exceed 40 lb hinge hang/stress test12 lb impact test to ensure cover remains in tactLockable hasp all models accept up to 1/4 in Dia shank1/8 in THK gasket with slits for mounting screwsWhile in use covers are easy to installMeets requirements for cold impact testing (-60 deg F)