For making my rack look stylish and letting heat out.
I always got a grill at the top of my racks in the back and sometimes in the front.
Added benefit of having a grill instead of just leaving a hole is stability to the rack itself.
This grill is sturdy and does not warp easily so it gives your rack a good solid point of tourqe protection if you got your rack on wheels or lug it around for conserts.
Looks good, recommended.