The fan is made of 5.5mm and the stand is made of 12mm plywood. The groove width is 6mm, so there is a slight gap. Please create wonderful works with your favorite designs. Please allow for some size誤差. There may be cracks on the back side of the cut or brown spots. Please refrain from purchasing if you are concerned about small details or if you are looking for perfection. Please refrain from price negotiations.