This alternative outdoor sensory wall is designed to create responsive thunder-like sounds. Have your children experiment and produce a range of sounds effects by tapping, banging and pounding the durable metal sheet. The frame is constructed from durable and nontoxic acetylated wood. This type of wood defies the elements in any seasons from shrinking, warping and rotting. Edges and corners have been rounded for safety for any environment. Additionally, all hardware is stainless steel. The total dimensions for this unit is 72”H x 30”W x 8”D. The Outdoor Thunderwall is proudly made in the U.S.A. and some assembly is required. Comes with manufacturer's (10) Year Limited Warranty, does not cover against naturally occurring weathering/ aging, and discoloration caused by being in the elements.