So I think that if you put the fan towards the top of the shelf that has you Directv equipment you should be good. That will create an airflow pulling in though the gaps in the glass. It should also help by pulling the heat from the AVR shelf through the gap between the shelf and glass. Hope that helps you Anyone have any other ideas I might have over looked? I reread your post and see your planning on moving some equipment around. So the above is my recommendation for how things are. Here is for moving the AVR to the top and removing the door. I would just put the fan at the top and feel for the warmest area before placing your fan. My AVR gave the most heat of the left side so I cut and placed my fan on the top left and that worked out well for pulling out that hot air that was just sitting there.