I see no words in the item description that indicate the quantity as plural, is this a 3 pack or a single?

Watch the video. The machine uses 3 filters at the same time, so it's a 3 pack, that provides a single change of all 3 filters in the machine. The recommendation is one of these 3 packs every 6 months for a complete filter change.

Is this the standard filter used in HepaSilent model for Blueair 500/600 Series Air Purifiers?

Yes. BlueAir only produces one set of 3 filters for the 500/600 series. If you go to their website, www.blueair.com you can read about their HEPASilent Technology. The old original blueair filters used to also have an activated charcoal layer as part of the standard filter. They have done away with that extra layer. If you want to filter cigarette smoke they have another smoke filter series called SmokeStop. The original SmokeStop filters had some extra type of ingredients to filter out VOCs etc. The new non SmokeStop filters don't have the activated charcoal layer so it doesn't filter out any VOCs at all. The old ones used to be able to filter out fumes from new carpet out gassing etc, but not the new ones. Older was better. Just another way to make more money now, ha,ha. We have no choice but to purchase what they offer. Anyone at BlueAir listening?

my Blue air 501 machine takes 3 filters. Is this only 1 filter or the 3 that it needs?

It was a little confusing at first, but the full read to RECOMMENDED to change filter once every 6 months, or dependent on usage. This filter can be recycled after it's changed. The 500/600 Series air purifiers use 3 separate filters, this replacement pack contains a set of 3 filters." It says that it contains the pack / the set of three. These are the dual protection filters. I use the regular ones that are around $79.

Hi, can these be used in the Blueair 680i model? Thanks!

Blueair 500/600 series models should all use the same size filter. If you read the description, it said compatible with 680i.

Hepa Silent Particle Filter For Classic 500 600 Series White

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Description

🌬️ Elevate your air game with Blueair’s silent power filter—because clean air is the new luxury.

SEAMLESS COMPATIBILITY - Perfectly fits Blueair Classic 500/600 Series models for hassle-free replacement.
ECO CONSCIOUS CLEAN AIR - Made from 100% recyclable polypropylene & polyethylene fibers, supporting your sustainable lifestyle.
TRUSTED GENUINE QUALITY - Backed by a 1-year manufacturer warranty and over 1,200 five-star reviews—never settle for less.
BREATHE PURE LIVE BETTER - Captures pollen, dust, pet dander, mold spores, viruses & bacteria for a healthier home environment.
EFFORTLESS ENERGY EFFICIENCY - Low-density filter design reduces air resistance, saving energy without compromising performance.

The Blueair HEPA Silent Particle Filter for Classic 500/600 Series is a genuine, high-performance replacement filter designed to reduce airborne pollutants including pollen, dust, pet dander, mold spores, viruses, and bacteria. Compatible with multiple Blueair Classic models, it features a low-density pleated design that saves energy while maintaining optimal airflow. Constructed from 100% recyclable materials, it supports eco-friendly living and comes with a 1-year manufacturer warranty for peace of mind.

Specifications

ASIN	B00007E7IK
Air Filter Construction	Pleated
Best Sellers Rank	#42,647 in Kitchen ( See Top 100 in Kitchen ) #31 in Air Conditioner Filters
Brand	BLUEAIR
Brand Name	BLUEAIR
Common Applications	Residential, Appliances
Compatible Air Purifier Models	Blueair Classic 505
Compatible Devices	Blueair classic 501, 503, 505, 510, 550e, 555eb, 601, 603, 605, 650e
Compatible Hvac Systems	residential
Compatible devices	Blueair classic 501, 503, 505, 510, 550e, 555eb, 601, 603, 605, 650e
Customer Reviews	4.7 out of 5 stars 1,235 Reviews
Filter Mounting Type	Slide In
Filter Shape	Rectangular
Global Trade Identification Number	00072874307516, 00689122000060
Included Components	500/600 Series Particle filter kit (3 pcs)
Item Dimensions L x W x Thickness	22.9L x 7.6W x 33Th centimeters
Item Type Name	Classic Replacement Filter
Item Weight	1 Pounds
Item weight	1 Pounds
Manufacturer	Blueair, Inc
Manufacturer Part Number	500600 PFK
Material	Polypropylene & Polyethylene Fibers 100% Recyclable
Material Type	Polypropylene & Polyethylene Fibers 100% Recyclable
Model Number	501FILT/3PK
Number of Items	3
Product Grade	new
Product dimensions	22.9L x 7.6W x 33Th centimeters
UPC	750408332622 759005341792 787732244512 783327943747 072874307516
Unit Count	1 Count
Warranty Description	1 Year Brand Warranty

Reviews

J**Z

Genuine parts always better (for me)

Perfect fit. Filters really well. I always buy genuine mfg filters; not that much more expensive but I never have to worry. They really help reduce the amount of dust !!!!

28.10.2025

M**D

Wrong item Deleiverd

I can evaluate this Accessiores as it’s not fitting in my blueair 680i has different fillers

19.04.2022

徐**如

Looks good

Good packaging，Waiting to use....

7.01.2014

A**R

BLUEAIR Classic 500/600 Genuine Particle Replacement Filter

Very happy to have clean filters. They were very easy to install. But FIRST, remember to clean out all the accessible vents - I vacuumed and wiped them down. Now we are breathing fresher air. Thank you.

6.03.2023

K**R

Good quality original product. Lasts much longer than the “recommended” 6 months.

Effective filter that lasts longer than the recommended 6 months eg for animal allergy mitigation. Too expensive for so frequent replacement for this purpose.

13.02.2021

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