If I could rate this filter 100 stars I would! It has literally changed my life. I started having very severe allergic reactions and suffered quite awhile before realizing it was my in-home air quality. It was to the point of pulling up carpet or purchasing a new home. Med testing confirmed a dust & pollen allergy.  I researched & came across Filtrete '2400', purchased 2 immediately along with their linen air fresheners and within minutes of switching my filters to these I was breathing better & my home smells wonderful. 

Thank you Filtrete for giving me my healthy life back!