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  1. All Filters
  2. Air Filtration Guide
  3. Do your air filters have arrows for installation direction?

Do your air filters have arrows for installation direction?

Yes, SpiroPure air filters have arrows printed on the side so you can be sure to install them in the correct manner to match the direction of airflow.

Air Filter FAQs

  • What is a MERV rating?
  • How often should I change my filter?
  • How do I find the dimensions of my air filter?
  • Can I wash or vacuum my filter to make it last longer?
  • Why do I need a filter?
  • Can I use a HEPA filter for my furnace?
  • Will the compatible filter replace my OEM filter if it is smaller?
  • What is the difference between MERV, MPR, and FPR ratings on air filters?
  • Are your air filters individually wrapped?
  • Do your air filters have arrows for installation direction?

Charts & Tables

  • MERV Rating – Contaminant Removal Guide
  • MERV Rating - Actual Particle Size Removed and Efficiency in Percentage
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