Average Reviews:
(More customer reviews)We bought the air purifier last year (and loved it), so we were due for a filter change; however, when I changed out the old filter to put in the new one, it's a DIFFERENT SIZE AND DOES NOT FIT!!! The new filter is slightly smaller and slightly thicker, so that the outer filters will no longer fit together. Perhaps there is another purifier that this filter fits, but it does NOT fit the XJ-3800.
We will be returning this immediately and expect Amazon's great customer service to provide a full refund, including shipping, because either it is not the product it claims to be, or Amazon sent us the wrong product.
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HEPA air filters are made from very tiny glass fibers that are made into a tightly woven paper. This creates a filter consisting of a multitude of very small sieves that can capture extremely small particles, including some biological agents. Once trapped, contaminates and particles are not able to flow back into circulation, due to the highly absorbent pores of the HEPA air filter.HEPA air filters are largely considered the most effective type of air filter for solid particles, such as dust and other allergens. HEPA air filters remove 99.97% of particles down to 0.3 microns in size, almost 300 times smaller than the width of a human hair. HEPA air filters were developed by the Atomic Energy Commission during the second World War. They were originally designed to remove radio active dust from their plants. HEPA air filters are recommended by the U.S. Dept. of Homeland Security. HEPA air filters are effective for solid and liquid particles, but not effective for gaseous particles. The XJ-3800 HEPA & ionic air purifier incorporates other technologies that are effective against gaseous particles, such as ionization and activated carbon filtration.
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