White Horizontal Extra Duty While-in-Use Weather Protective Cover meets NECĀ® 2017 and 2020 406.9 (B)(1) Extra Duty requirement for any application. Rugged UV-resistant polycarbonate cover and back protects devices without cracking or breaking and is non-corrosive. No disassembly required for vertical or horizontal mounting orientation. 1-Gang box includes 3 inserts for 16 different configurations. 2-Gang box includes 5 inserts for over 55 different configurations. Box inserts accommodate decorator and GCFI devices, duplex receptacles, toggle switches and round receptacles. Cover cord opening fits No 12 AWG or lighter cord. Exceeds UL outdoor low voltage landscape lighting requirements. Box cover includes pre-mounted gasket.