How to seal this open duct?
Found this in a cabinet under the stove. I think it’s old ventilation from before the induction burner was installed. Not sure how to seal it off.
![](https://kbin.cafe/media/cache/resolve/entry_thumb/3f/5f/3f5f28ae3940200606ce22667500b9a8cb6e4d780cd604280d178a5110125ab7.jpg)
Found this in a cabinet under the stove. I think it’s old ventilation from before the induction burner was installed. Not sure how to seal it off.