Could someone measure the space of the middle hole in the lower grill section?

Since we live in a place where moose are everywhere, I am looking at putting a couple of SR ridgid light bars in the center grill opening in the lower grill. leaving the top and bottom open. Rigid SR are one of the narrower lightbars that still put out some good light. Looking at putting 2 10" hyperspots there or one hyper spot and one driving beam. Could someone measure this space for me please. TIA!