"My filter company uses the following notation to rate one of its filters: BX=2, B10=X, BX=75, followed by these numbers: 5, 8 and 17. I'm familiar with the Beta rating, but I've never seen it shown ...
2700 Steeles Avenue W, Concord, ON L4K 3C8, April 06, 2022 (GLOBE NEWSWIRE) -- The demand for high-quality air filtration products has risen in Canada over the past several years. With the volume of ...
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