I bought one of these, and have been happy with mine. I use a #10 filter in it. I have not needed mine for forest fire smoke (I know these higher rated ones are rated for smoke), but it has been amazing with pulling fine particulate matter from collecting (baking soda, mica, etc).
This simplifies the taping/untaping, but before this purchase I did the tape method too. I was about to look for some aluminium channel to build a frame for the filter, but this product save me the time and hassle of that. Plus, this fan comes with a stronger motor to compensate for the filter.
I bought one of these, and have been happy with mine. I use a #10 filter in it. I have not needed mine for forest fire smoke (I know these higher rated ones are rated for smoke), but it has been amazing with pulling fine particulate matter from collecting (baking soda, mica, etc).
This simplifies the taping/untaping, but before this purchase I did the tape method too. I was about to look for some aluminium channel to build a frame for the filter, but this product save me the time and hassle of that. Plus, this fan comes with a stronger motor to compensate for the filter.