How can I shorten this metal duct (used for a downdraft range)?
January 25, 2014 2:24 PM Subscribe
I have a very well-constructed downdraft duct that is a few inches too tall. My normal efforts to try to cut it down or remove a piece have been unsuccessful. The downdraft range I bought doesn't line up with the duct and is about two inches too tall. Is there some way I can get the two to play nice?
posted by fireoyster to Home & Garden (5 answers total)
I have a house that has a duct for a downdraft from a counter-mounted range. The kitchen is on the first floor, above a basement, and the duct goes into the floor turns 90 degrees in the basement, and runs out the side of the house. The previous range did not have a downdraft feature and only sat a couple of inches below the thickness of the counter.
Here are some pictures of the duct.
Here's the problem: I bought a new (well, used from Craigslist) cooktop that has a downdraft blower. The blower outlet on it is permanently joined to it and is about two inches too long plus it is offset about four inches. This means that the cooktop doesn't sit down on the countertop and the blower's outlet doesn't go directly into the duct.
I assume I will need to buy ducting to carry the output down into the duct. The problem is that my existing duct is apparently steel or very rigid aluminum. My snips don't do any damage. Removing the tapered part would be ideal but I can't seem to get it to budge. There is a second floor above the kitchen with virtually no gap between the floors so running a normal cooktop vent would be difficult. I'd like to not have to replace the entire duct since it is rather firmly affixed to the house but that can be an option.
Does anyone have any ideas for how to make a round peg into a slightly shorter round peg?
Blowtorch? That would be awesome.