95% Block @ 0.5µ Harsh Environment 12 Pack Pre Filter for Air Purifiers 7.25"x7.25"

  • $ 19.00
  • Save $ 10


NOTE: According to our supplier this is the same material that is used in N95 masks to block contaminates and can be used for making homemade masks. The material edges stick together when cutting. They require a little effort to separate.

Available in TWO (2) Sizes: 7.25x7.25" or 7.25"x6" For folding into masks.

Your air purifier gets really dusty inside from small dust, smoke, pollen, and other contaminants. Using one of our harsh environment pre-filters allows you to keep the inside cleaner, avoid extra cleaning and keeps your warranty intact because the inside is kept cleaner. These filters fit on the back of your existing filter just under the back plastic grid that holds the filters in place. These filters are paper-thin, but work just great! They capture airborne particles, keep the internal parts cleaner, reduce your monthly maintenance, help prevent a misuse warranty condition and more. Replace each month when you clean your unit.

  • Easy to install, saves time on cleaning, captures dust, smoke, pollen and more.
  • Fits any air filter with 7" x 7" filter size including Fresh Air 2.0, 2.0, Fresh Air Everest and others
  • 12 x 7.25" x 7.25" filters - Fits FreshAir 2, Surround, Everest and others 
  • OR 12 x 7.25" x 6" for smaller filters - Perfect for folding into masks!
  • This is material that is also used inside N95 Masks for use in hospitals
  • Blocks 95% of material at 0.5 microns or larger
  • Can be Cut to Fit other filter sizes including masks

  • NO FIBERGLASS in this product
  • 100% Virgin PolyPropylene non-woven material with 95% contaminant block
  • Certified BFE 95 Filtration Grade via test performed in compliance with US FDA Good Manufacturing Practice (GMP) regulations 21 CFR Parts 210,222 and 820
  • Basis Weight 25 to 30 g/m squared, Delta P Flow Rate 8 Liters per Minute
  • Delta-P Test Area - ~40cm squared - BFE Rating 95%
  • BFE Test Method: ASTM F2101-19 3.2-3.5 mmH2o/cm sq - EN 14683:2019 31-34 Pa/cm squared

To make sure we are not appearing to price gouge in any way, we are separating the shipping on this item so that you can see the price of the product without shipping.