Does anyone here have the AHS smoke hood fan? Is it 100% effective at eliminating smoke when loading? Are there other manufacturers of similar fans/hoods? I currently have one a made up myself from a 400cfm all metal squirrel cage fan I bought from of all places a hydroponics supply place I found while searching for fans. It has worked for a few years but it has recently died and I need to replace it with something . I noticed the AHS moves 485 cfm so it might be a bit better as well.