Classic 200/300 Series Particle HEPA Filter Replacement Compatible with Blueair Classic 200/300 Series Air Cleaner Purifier Models 201, 203, 205, 215B, 250E, 270E, 303, 2 Pack

Perfect fit. Half the price.

I don't know whether the brand name filter is any better for the money, but these are a good fit and look like good quality. I know I'll change the filter more often if it's affordable, so for me that's part of the trade off.

Good economical replacement for the very expensive Blue Air filters. ,

These 200/300 filters fit my Blue Air unit perfectly and seem to perform just as well. Very pleased with this lower cost replacement.

Been buying these for a couple of years and they save us so much money! They do fit snug but worth it!

I decided to try an after market filter instead of the expensive blue air filters. The Ganteny filter fits my 203 slim perfectly, no gaps. Then I lay a thin carbon filter (purchased separately) on top and it's good to go.

Works well. Much less expensive than the official filters.

Great!