Blueair 103770 air purifier filter
Last checked October 30, 2026
103770 is a genuine Blueair air purifier filter. Blueair lists it for 12 Blueair models, including CLASSIC 501, CLASSIC 503, CLASSIC 505, CLASSIC 510.
Listing name: Classic 500/600 Series DualProtection Filter.
Find your exact model number in the list below. If it is not listed, this page does not confirm a fit.
Fit source: the 103770 listing on Blueair (blueair.com), the maker's own site. Read October 30, 2026. Open the listing.
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Unplug the purifier before you change a filter.
Models Blueair lists for 103770
Showing 12 of 12 models, as written on the listing.
| Model | |
|---|---|
| CLASSIC 501 | |
| CLASSIC 503 | |
| CLASSIC 505 | |
| CLASSIC 510 | |
| CLASSIC 550E | |
| CLASSIC 555EB | |
| CLASSIC 580I | |
| CLASSIC 601 | |
| CLASSIC 603 | |
| CLASSIC 605 | |
| CLASSIC 650E | |
| CLASSIC 680I |
Where to find your air purifier model number
On the back or bottom of the unit. Use the model number, not the serial number. Search any model number.
Look-alikes: other Blueair air purifier filter parts for some of the same models
If your model is listed under more than one part, match the number printed on your old part.
Questions
Will the 103770 fit my Blueair air purifier?
Only if your exact model number is on the list above. Blueair lists it for 12 models, read October 30, 2026.
Where is the model number on a air purifier?
On the back or bottom of the unit.
Is 103770 a genuine Blueair part?
Yes. 103770 is Blueair's own part number, sold on Blueair (blueair.com).
Is there a cheaper replacement?
We list only the genuine part. There is no public certification listing to compare aftermarket versions of this part, so we do not rank them.