I got a free blower motor from a member of another forum. Its from a house HVAC this thing moves some air. It has 3 speeds. I only wired the low speed and it moves plenty of air.
I made a box to fit around the blower and the filters I bought. It measures 14.5” H x 25.5” W x 34.5” L.
Im using 12×24 filters. The prefilter I bought from Lowes it is a 3M 1500. Not sure what the micron rating is but it filters 93% which I know is good. The second filter I bought is a multi pocket filter from here. http://www.filters-now.com/products/ir5.html#products It is a 12×24 x 15 5 pocket 95% filter.
On this side of the box I made to seperate sides with a piece of foam sealing them. The front side has the motor mounted to it. The back one is made to come off so I can access the filters to change them. Other plans I saw used a hinge on the side but I didn’t think that it would seal well.
Spacers to hold the filters.
I decided to paint the blowers because it had a stink to it. The previous owner was a cigar smoker. I painted to seal in the smell. It worked.
Here it is finished and hung from the ceiling. I screwed 2×4’s into the rafters with 4” lag screws and then I put 3” lag eye screws into the 2×4’s. The S hooks I used are rated for 90 lbs each. I think the whole thing weighs about 40 -50 lbs so one hook will hold its weight. Overkill but I didn’t want this thing falling on my head. I also had to lower the light I had in this same spot as the air cleaner was blocking all the light.
I ran the power to a power strip on miter bench to turn on an off. I want to find a timer to hook up as well so I can run it for a couple of hours after I leave the shop.
In case you are wondering about the stain job this plywood was recycled from a display from work. I didn’t put a finish on it because I wanted to see if it was going to work before I invested the time. It works great so now I need to take it down and decide on a finish. I want to paint it blue to match my new cabinets but it might be better to paint it white to help reflect light. What do you guys think?