Bad design. You need to cover the vent at the top of the door so the cool air from the bottom of the door can be pulled into the closet, flow over the equipment, and exit via the fan output at the top. All the current layout is doing is pulling cool air across the top. Relying on convection will not get you to your goal. If, after closing off the top vent, you still cannot get enough air flow, cut another 1/2 inch from the bottom of the door to increase the draw volume.
One entrance low, one exit high, with the ability to draw the hot air out of the top with a fan. The entire closet must be sealed, except for the air entrance and exit. Btw, better the exit is at the back of the closet, so the air is drawn from the front of the closet (door) across the equipment and out the back.
It's a VIRTUAL channel unless stated otherwise.
Last edited by RayGuy; 05-22-2019 at 10:42 PM.