What is a pre-filter?

ryanc

Member
Joined
Aug 18, 2018
Messages
13
Hi,

I saw mention of something called a pre-filter that will put less strain on your HEPA filter.  I just ordered a CT 26 E HEPA.  What is a pre-filter?  Can someone please show me a link to this item and maybe where I can find instructions on how to use one?

Thanks!

Ryan
 
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