These wall tree additions are perfect for mounting on the wall for your cat. They are made from solid poplar multilayered board with a naturally variegated surface. The wood surface makes it highly cat-friendly. The good looks of these wooden wall pieces make them unobtrusive, blending with your decor, and an elegant addition to the wall. Your cats can climb up high. The openings on these wall tree additions provide excellent air circulation while your cat is resting. The flat surface on the top provides yet another place to perch and sleep. With Armarkat wall series, the sky is the limite. You can fully leverage your imaginations to create a comfortable space for your furry friends and you.Measurements:Full Unit: 20" x 12" x 18" (H)Base: 10"x 12" (W)Front Hole Diameter: 14"Side Hole Diameter: 7.5"Gross Weight: 20.3 lbs.Net Weight: 19.6 lbs.Package Dimensions: 17.5"x 6.3" x 20.5" (H)