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Filters
I sent a letter to 3M manufacturing. They make an array of filters for home/commercial applications. I mentioned that we needed a very efficiant filter,not foam, that could be washable/disposable. Even if we had to cut them from larger sheets. I would much rather change the filters than have to go through any more disruptive maintenance. I will keep in touch and let you know of this and other contacts I have made for filters and case/ fan holders for them.
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