This is a genuine wooden case compatible with the HA-3500, HA-5500, and other models. It can be secured from the bottom with four screws. If 19-inch rack mount hardware is attached, it needs to be removed before installation. This is an analog series from the company that has been discontinued, but it remains very popular. I purchased a used, excellent condition HA-3500 and mounted it in a different rack, so I am offering only the exterior case for sale. The rack portion and the four screws are included in the sale. There are almost no scratches, and it is a very clean item.