Product review (2 stars): Poorer quality and different size than its original.
I bought this to replace the "same" 30 inch model and it definitely suffers from "Let's make this with poorer quality materials, and hey, if it doesn't have the exact dimensions, who really cares!" I kept and installed it but only after making new holes in the overhead cabinetry. The metal frame and sheet metal are noticeably lighter gauge. The biggest irritation came when I couldn't tighten the blankety blank ground screw without stripping the philips head. To help quiet it down (after dismounting it), I added metallic duct tape to the top venting exhaust flapper. Again, the lighter gauge metal seemed barely any heavier than tin foil. Cheap hardware supplied all around.