I have a wall mounted Open design case (Thermaltake Core P5) - dust has not been an issue at all. In fact, getting rid of dust is lot easier. Since I don't hav

I have a wall mounted Open design case (Thermaltake Core P5) - dust has not been an issue at all. In fact, getting rid of dust is lot easier. Since I don't have to open up the case to clean it out. I just use a handheld blower to blow out the dust every so often from the sides. Regardless, it for some reason has far less dust pile up than a close case. I assume because in close cases, dust has no room to move out as easily.