Why Are HEPA Filters Pleated or Folded Into Zig-Zag Shapes?

The pleated HEPA design (folding into a zig-zag shape) allows for a larger area of HEPA filter material to be used in air purifier filters. The larger area means the purifier is able to filter out more air in one go, improving its effectiveness. A pleated HEPA design gives a higher CADR compared to one single layer filter. 

Learn more about our range of simple, no-nonsense HEPA filters »


Free Guide to Breathing Safe

Want to learn more about protecting your health? Join thousands more and stay up to date on protecting your health.

Was this article useful?50

Leave a Comment

Smart Air low cost purifiers

Smart Air is a social enterprise that creates simple, no-nonsense air purifier and provides free education to protect people’s health from the effects of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.

Certified B-Corp air purifier company