Ontheone F8 (S) Pre-filter True HEPA Replacement Filter Compatible with IQ Air HeathPro Series Pre-Filter (F1), True HEPA First Stage Replacement

Great product, does NOT SMELL CHEMICALLY as another buyer has said. Product seems to be working very well and way cheaper than IQAir products! Give this Brand a try! Works great!

Got these instead of the original ones due to pricing. Fitment is good, quality is good, and shipping was fast!

I have used a few different brands over the years and found this filter to be one of the best for the money. It is well made and fits correctly. I plan to buy it again.

Saved money.

Although an excellent price, compared to the stock filter that I removed from my IQ Air, this filter has about 20% less air induction surface area. That's because the frame is twice as thick around the outside and the "grate" sections are twice as thick. Thus there is less area for air to pass through the filter and the quicker the filter will clog over time. Will look elsewhere next time.

working good

I cannot afford the true IQ air products, so I am thankful that I can find these on Amazon.

Time will tell how long it lasts