BLUEAIR Genuine Blue Pure 311 Auto Replacement Filter for 311 Auto Air Purifiers - AHAM Certified, HEPASilent Dual Filtration, Removes 99.97% of Particles & Odors, Genuine Carbon Filter

Easy to install and the filter help keeps the air in my home clean. The machine Is not real loud when it turns on to clean the air.

I order this every year! Great product, keeps my air pure and clean

I have three cats and I am semi-allergic so an air purifier is a must! These replacements are genuine and very easily to install. You just take off the fabric wrapping the slide off the old filter and replace with the new one. This really helps with odor removal. This brand is great!

Excelente producto muy recomendable y viene rapidísimo en el mismo días funciona muy bien el aire de mi casa es apropiado para mi bebé de 4 meses había mucho polvo volando por todas partes

This filter works well with the product, as you would expect. It definitely filters out the stuff because when I replaced my first, it was filthy. The installation process was pretty easy but the instructions help quite a bit.

I tried to save a little money and buy an off-brand filter…it didn’t fit properly and was a piece of crap. These blue air brand filters are amazing as well as the machines themselves! Had the air purifier for about 3 years. I replace the filter every 6 months and this is the difference when I go to replace it.

I read some reviews here that this filter was too large or didn’t fit, so was a bit wary. I have a Blueair Blue Pure 311 Auto which it fits perfectly on. Blueair it seems has a tendency to name their air filters very similarly, so just make sure to double-check your exact model. The filter itself makes a difference in air quality so I felt it was important to purchase a genuine one versus a cheaper one. My filter is never very dirty after 6 months so sometimes I use a filter for a few months past that timeframe – I just reset the light and put a calendar reminder for myself to change it a couple months later. All in all, great product.

Removing and replacing this filter was very simple. It was delivered fast & the price was right.

Quite easy to install and worked beautifully.

Works well no issues

Good brand it last 6 months then replace I never turn off the air purifier. It performs well

I used this in our blue air pure 311 auto. This original One lasts alot longer and provides better filtration than the aftermarket thinner badly fitting ones. I would highly recommend just sticking with these ones and you will not have any issues!

Good price, good product, easy installation