A replacement range hood vent. Range came with new house, did not have vents, so I don't know what they looked like originally, but my replacements look pretty good if you ask me.

the ventv2.stl file is only half of the vent, to print the whole thing, either use the vent_both_sides.stl file, or print ventv2 twice, with one mirrored.

Range hood appears to be branded Nutone model number: SL6200A. No idea if it fits any other brands or models, but this thing prints fast so if you need a vent and it looks close, it might not hurt to try.