3-3/16" x 5-1/8" x 2" Joist Hanger. Pre-drilled holes allow for easy installation. The iron brackets come predrilled with 4 holes, so as soon as they arrive, they will be very easy to mount with the appropriate screws for your mounting surface. Easy to install: just drill a hole on the wall or on wooden board and screw the bracket on to wall or board. Styles that are both simple and classic, that can be used for both Collections Finished with a black powder coat, for protection from corrosion. Mounting hardware not included. For decorative use only.