BestAirPro SG4PR | Our#: 172708

BestAirPro Replacement for Aprilaire # 401 Filter

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BestAirPro SG4PR | Our#: 172708

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Reduce common allergy symptoms

  • Reduces allergy irritating particles
  • Captures allergens like dust, mold spores, pet dander, dust mite debris and more
  • Lessens odors from car fumes & smog
  • Creates cleaner indoor air

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Product Details

BestAirPro Replacement for Aprilaire / Space-Gard # 401 Filter, Single Filter

The BestAir SG4PR is an inexpensive replacement for the factory original #401 filter from Aprilaire.  This filter is shipped like a collapsed accordion, and is expanded into your existing plastic frame before being installed in your air cleaner.  This filter offers a MERV 11 efficiency rating and captures small particulates to promote excellent IAQ (Indoor Air Quality) in your home.


  • Inexpensive alternative to factory original product (this product is not an original Aprilaire filter)
  • MERV 11 efficiency rating
  • Fits Aprilaire Air Cleaners - model 2400
  • Removes airborne particles like pollen, mold, pet dander, dust and dust mites, carpet and textile fibers, insect debris - as well as smaller particles which plague allergy-sufferers
  • Ships collapsed and must be expanded into existing plastic frame and held in place by plastic "pleat spacer" combs
  • Filter dimensions (once expanded into frame) are approximately 16" X 25" X 6"
  • Replace filter annually to maintain the best air quality
  • Made in the USA

Note: This product is not manufactured or distributed by Research Products Corporation, owner of the registered trademark Aprilaire®.