HEAVY-DUTY WEATHERPROOF PROTECTION - The Intermatic WP1020C Weather Proof Plastic Receptacle Cover for a typical 4 x 4 Square Box is designed to provide robust protection for your outdoor electrical outlet. Made from UV stabilized polycarbonate, this cover is built to withstand harsh weather conditions. Complies with current NEC Article 314.15 for damp and wet locations. Outdoor Type 3R Plastic enclosure type. VERSATILE MOUNTING OPTIONS - Vertical mount only cover has inserts for applications with a single GFI or duplex device that can be oriented vertically or horizontally , making it ideal for both residential and commercial outdoor applications. Inserts only can rotate in vertical and horizontal positions in a 4 x4 Box. 2.25 inch depth. COMPLIANT WITH SAFETY STANDARDS - Rest easy knowing that this receptacle cover meets UL certification for Type 3R outdoor enclosures and complies with current NEC Article 406.9(B)(1) for damp and wet locations. It also undergoes cold impact