This is a cat wall shelves, featuring cat scratching post, cat jumping platform, Cat Bridge, cat bed, Cat Ladder. Our cat wall furniture is made of natural solid wood, sturdy and odor-free, allowing even larger cats to jump safely. The cat shelves for wall adopts wall-mounted installation, wasting no space. Natural wood and iron brackets allow the wall cat shelves to blend perfectly with your furniture style. Bolts and anchors are suitable for use on brick, thick solid wood, concrete, or similar dense walls. If your wall is made of other materials (e.g., drywall/plasterboard, hollow structures, lightweight cement), you need to prepare suitable fixing bolts by yourself. Please use a 6 mm drill bit to create the hole in the wall. Failure to do so may result in the screw breaking or becoming loose. The longer side of the shelves must be secured to the wooden board; otherwise, it will cause the board to break.