the unit appears to be of high quality though there are no instructions as to routing for tubing. The clear tubing doesn’t have enough reach to clear the upper level if is intended to.
My biggest complaint however is that the unit is damaged from shipping. I’ll allow that the instructions and possibly other parts were lost through the holes in the boxes so this may be solely a shipping problem. The unit appears to power up but it is missing most of a back “foot” and a connecting piece for stacking the tower. The top has major cosmetic damage ruining the aesthetic.