The Chief PAC525FW In-Wall Storage Box with Flange is designed to simplify the installation of flat panel displays by providing a recessed space for routing excess cables and attaching surge protectors or power conditioners. This storage box features a flange that allows for easy drywall mounting, ensuring a clean and professional look. Compatible with various Chief wall mounts, it supports a maximum load of 10 lbs (4.5 kg) and is constructed from durable materials to ensure longevity. With dimensions of 15.4 x 10.3 inches (39.1 x 26.1 cm), it fits seamlessly into your wall, making it an essential accessory for any AV setup.