Meet Code... with the One-Piece Recessed Electrical Box Designed especially for Siding! It’s a one piece box with a weatherproof-in-use cover, designed especially for siding. Installation is fast and easy. And the job looks great because this extra-deep box is recessed in the wall, and mounts flush with the siding surface. Plus, its outer flange covers cut ends of the siding. The NEC 2005 REQUIRES that exterior outlets for 15 and 20 amp circuits include a weatherproof-in-use cover. With this box, you’ll be in compliance with the NEC. The weatherproof-in-use covers come in clear and white, and may be removed for easy device installation. Arlington’s recessed electrical box. It’s a beautiful thing.