Found this guy on a different forum.
He sells AV risers for a really great price. If you look around, risers cost way too much -- it's actually ridiculous.
If you need some ventilation, and you don't want drop a ton of cash...check him out. I recently bought some risers for my amp and it has given me the confidence that I'm getting some ventilation between the components.
******I am not affiliated with this company. It's simply a great alternative that many of you could benefit from (financially especially).