[tonyvdb]

I dont recommend glass shelves, its best to use wire or some sort of open shelving system to allow for better airflow as it will restrict air moment when you put equipment in a recessed location.

 

[tonyvdb]

Rubbermaid has wire shelving that is designed for closet organization. They can be cut to any length and mount from the side and back so nice and sturdy. You can find them at Home depot and other stores like them, I think even walmart sells them.