$40 · Furnace fan/air handler

This is the squirrel cage fan from our old oil furnace, I bashed the box together to work as a temporary air handler for our old heat pump. So you can duct this in and put a filter in it. Worked for us for a couple seasons until we got the new one installed. Box isn't pretty, but as I said, it's a bashed together old oil furnace lol. I was going to use it for shop ventilation, but I'd rather have the space. Or toss the box and just use the fan.