|Project by wunderaa||posted 05-15-2012 03:36 PM||4009 views||26 times favorited||15 comments|
I finally got around to making a shop air cleaner. What a difference this makes!! Total cost ran about $60 and took about 4 hours to complete.
Unit is made to utilize common 16×20” filters. Constructed out of 3/4” plywood, the sides are rabbeted, then screwed and glued together. Has some internal bracing, as well as gasket material to seat the filters onto. Currently it has a 4”, 1-micron furnace filter fronted by a cheap pre-filter. Fan was purchased through craigslist for $20 and came out of an old a/c unit. Fan is 1075 cfm, 4-speed, but just wired for single speed. I have wired it into a new wall switch for convenience.
I highly recommend this quick project to folks here. Keep an eye out on craigslist for a/c blower for cheap and breathe easy!!