This is our 1st generation Cat Shelf. If you would like to see the 2nd generation Cat Shelf, which works with our cat mod attachment options, here are some links: 18 version: click here 34 version: click here This solid wood shelf is extremely sturdy and has a beautiful wood grain pattern. Each shelf has its own naturally unique look. This is a larger shelf, that can be used as a way to get up to a larger structure or if your cat just needs a spot to take a quick nap. When screwed into studs, all of our wooden shelves are very strong and have been tested to hold 85 lbs. Two brackets come attached and spaced out a 16, for each go into a stud. All of our furniture also comes with screws and drywall anchors. Dimensions: Width: 18 Height (including brackets): 6 Depth: 9 Pictured are shelves in English Chestnut and Onyx stains.