Arlington's new non-metallic device/sconce box saves time ! It comes ready to use and it's easy-to install with a 3-1/4 in standard hole saw! You'll get a super-secure installation too. As you push the box into the opening, its saw teeth cut a path through the drywall for the device screws. They hold the device securely in place. After installing the device, complete the job with a maxi-plate - required to fully cover the hole in the drywall.