its all 2x6 construction, the same as my 240. You guys have to remember i know longer have the room behind the wall so everything has to fit under the stand. All of the strength in the stand is in the legs anyways. The stand that marineland sells is 3/4" oak. Im useing 2x6 so im sure im going to be fine. I am also going to add a removable center support in the front and rear