Review on Cabiclean True HEPA Replacement Filter for Honeywell HPA Series Air Purifiers, 6 Pack by Eddie Kittylovin

Didn't have the chemical smell that I've had with other replacement HEPA filters. I don't think they last as long as other brands' filters, although that's my opinion and I don't have the numbers to back it. I've used many other brands in the past and you can tell when they lose their cleaning power (I'm not substituting time/light for them). If it helps, this filter was used solely to reduce smoke odor. worked about 12 hours a day and I had to replace them after 1 month (yes smoke is bad for filters but that's what my app is for). others (third party brands) have lasted 2 months per use.