The rustic floating shelves are made of premium paulownia wood and the boards are 0.59 inches thick, which are strong enough to withstand 20 lbs. of items per shelf. Supported by upgraded triangular metal mounting brackets, the wood corner floating shelves are strong and stable enough and will not fall or deform. There is a small opening behind the unique floating corner shelf for wall, which allows the wires to pass through. You can place cameras, Bluetooth speakers, modems, and small humidifiers.Details:Burnt brown11.8" x 0.6" x 16.5" eachSet of 3 shelves20 lb. max weight per shelfWood and metal