2-3/4" deep one gang vertical in use covers with interchangeable inserts are used when an outdoor outlet requires weatherproof protection while cords are installed. These covers have a versatile installation; they can be both device and box mounted. Garvin Industries’ weatherproof in use covers with interchangeable inserts have a unique snap fit design that makes installation easy and fast. Their high impact poly carbonate construction ensures durability in all locations and eliminates the risk of rust and corrosion.