Some basic questions on setting this stuff up. Just bought a new Marantz 8200 and it is 19 inches deep. My current audio rack has a glass door and a vented back. But it is only 15 inches deep.. I've looked at the Sanus and Salamander designs and they don't seem to be deep enough to have door and back attached.. What do you guys use. Do you have doors on the audio equipment or just an open front. Is dust something to worry about or is heat the big problem and I should just keep things open.. Interested in your thoughts..