Doesn’t the pre-filter reduce air flow through the filter?

It depends on the conditions. They are washable, so i change mine out and wash then every 45 days.

Do these fit 211 auto?

They are for a stand alone air purifier for your home.

Do these fit on the Blue Air 411 unit they look the same size?

I would think so. They're really stretchy...maybe keep reading the full product description; it may tell you.

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4 Pack 211+ Replacement Washable Pre-Filters for Blueair Blue Pure 211+ | Removes Pollen, Dust, Pet Dander, Color include Lunar Rock, Diva Blue, Lavender Purple, Forest green

Product ID: 258855512

Details

Air Filter Construction
Pad/Roll
Brand
Cabiclean
Compatible Devices
Blueair Blue
Filter Shape
Rectangular
Item Highlight
Removes Pollen
Manufacturer
Cabiclean

🌀Extends main filter life by blocking large particles

🎨4 vibrant colors to personalize your space

🧼Machine washable for effortless reuse

€ 36.93

Duties & taxes included

In stock

Sold byAmazon PortugalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌬️ Fresh Air, Fresh Style — Upgrade Your Space with Every Filter!

COLOR YOUR CLEAN - Choose from Lunar Rock, Diva Blue, Lavender Purple, and Forest Green to match your vibe.
EFFORTLESS MAINTENANCE - Simply vacuum or toss in the washing machine—clean air has never been this easy.
PERFECT FIT ZERO HASSLE - Designed exclusively for Blueair Blue Pure 211+ for seamless installation every time.
SMART INVESTMENT IN HEALTH - Affordable 4-pack ensures continuous fresh air without breaking the bank.
PROLONG YOUR PURIFIERS POWER - Pre-filters trap dust, pollen & pet dander, boosting main filter longevity by months.

This 4-pack of washable pre-filters by Cabiclean is engineered for the Blueair Blue Pure 211+ air purifier. Each pre-filter captures larger particles like pollen, dust, and pet dander, extending the life and efficiency of your main filter. Easy to install and machine washable, these filters come in four stylish colors to complement your home or office. Regular replacement every 2-3 months ensures optimal air quality and purifier performance.

Specifications

ASIN	B08KY3321X
Air Filter Construction	Pad/Roll
Best Sellers Rank	#40,166 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #222 in Air Purifier Filters
Brand Name	Cabiclean
Common Applications	Appliances
Compatible Air Purifier Models	Blueair Blue Pure 211+
Compatible Devices	Blueair Blue Pure 211+ air Purifier
Compatible Hvac Systems	residential
Customer Reviews	4.6 4.6 out of 5 stars (1,081)
Filter Shape	Rectangular
Item Dimensions L x W x Thickness	7.5"L x 6.2"W x 0.5"Th
Item Highlight	Removes Pollen, Dust, Pet Dander, Color include Lunar Rock, Diva Blue, Lavender Purple, Forest green
Manufacturer	Cabiclean
Manufacturer Part Number	Buleprefilter-4
Material Type	Polyester
Model Number	211+
Number of Packs	4
Product Grade	like new
UPC	619191749768
Unit Count	4 Count

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