Uses 12mm plywood. Width 28, Depth 21, Height 34. Inner dimensions: 23x12x32. Weight: 2.2 kg. Primarily for installation under eaves, but also suitable for outdoor use. Rain will not enter. The lower window is made of acrylic glass. Will be shipped as a 100-size anonymous delivery. This is a handmade item, unlike mass-produced products. As natural wood is used, there may be knots, scratches, warping, unevenness, or color variations. We ask that only those who fully understand handmade items purchase this product. Returns and exchanges are not accepted except for damage or malfunction upon delivery.