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Lasko is now selling a 20x20 box fan that accepts a filter -- but you can do this with any box fan.
submitted 2 years ago by [deleted] from lasko.com
[–][deleted] 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 0 fun3 insightful - 1 fun - 2 years ago (0 children)
The big advantage over air filtration units is 20x20 filters will always be available, proprietary filter designs may not.
[–][deleted] 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 0 fun3 insightful - 1 fun - (0 children)