I have an older Broan recirculating hood that came with the house, and I don't know the model number. I'd like to move it and remount it without a cabinet. Can you tell me how the holes on these brackets so I can be sure it will work with my hood? The first hole on my hood is about 3/4 inch in from the wall, and the second hole is 8 1/4 inches forward from the first. They both sit about an inch in from the side of the hood. Thanks for your help!