Product Dimensions & PackagePackage contains: 4 x white shelf brackets, 12 x long screws, 12 x short screws, 12 x plastic wall anchors. The size of shelf brackets: 7"x 5.1"x 1", with a thickness of 3mm. This brackets for shelves fit the nominal 6.5" to 9" W with 1" to 2" H board. Hidden Triangular Bracket DesignThe heavy-duty corner brace is only 1 inches high visible so you can easily conceal them between the board and the wall. Heavy duty shelf brackets will look like floating in the air, which makes your home much more neat and unique. 3mm Galvanized Iron&Support 90lbsThey are made of galvanized iron, 3mm thick floating shelves brackets with high strength screws carry up to 90lbs a pair. With high-temperature white painting surface to prevent rust and corrosion design makes it more durable. Easy InstallationYou can easily install the shelf with no special skills are required. Firstly, use a drill to dig holes in the wall and wood plank. Then, install the screw to fix the anchor. Finally, tighten the screw with a screwdriver. Wide ApplicationWith strong load-bearing capacity, you can widely use the hidden shelf in the living room, bedroom, kitchen, bathroom, yard, tool room, etc. Like make it wall mounted to become book shelf, decorative album holder, tools holder, kitchen shelf organizer, balcony flower stand.