How the quality of prefilters? thick and sturd as the oem?

They are premium prefilters and same as oem quality. You can buy with confidence.

Do these hepa have odor ?

Not at all. Even when first unpackaged. The odor of clean air after needing a new filter for 3 weeks is all I smell! :)

4870 isn't listed with compatible models so I would think not.

Replacing filters worked, but red led ("replace filter") still blinks ?

Try holding the UV light button for 5 seconds. That should reset the replace filter light.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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isinlive 2 Pack FLT4825 True HEPA Filter B Replacement with Activated Carbon Pre-Filters Compatible with Guardian Air Purifier AC4825 AC4300 AC4800 AC4900 AC4850

isinlive 2 Pack FLT4825 True HEPA Filter B Replacement with Activated Carbon Pre-Filters Compatible with Guardian Air Purifier AC4825 AC4300 AC4800 AC4900 AC4850

Product ID: 254034989

Details

Brand
isinlive
Material
True HEPA
Compatible devices
Air Purifier
Item weight
0.86 Pounds
UPC
680904375826

🌀True HEPA filtration captures 99.97% of particles

🌿Activated Carbon Pre-Filters for odor & VOC removal

🔄2-pack + 8 extra pre-filters for extended freshness

₩122313

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌬️ Elevate your air game—because fresh air is the new luxury!

ODOR FREE OASIS - Activated carbon pre-filters neutralize odors and harmful gases
EXTENDED FILTER LIFE - Pre-filters protect HEPA filter, maximizing durability and performance
READY FOR REPLACEMENT - Includes 2 HEPA filters and 8 extra pre-filters—stay ahead of air quality
SEAMLESS COMPATIBILITY - Fits multiple Guardian and Black+Decker air purifier models effortlessly
BREATHE PURE LIVE BETTER - True HEPA filter traps microscopic pollutants for cleaner air

The isinlive 2 Pack FLT4825 True HEPA Filter B Replacement set features premium True HEPA filters combined with activated carbon pre-filters to capture 99.97% of airborne particles and neutralize odors. Compatible with a wide range of Guardian and Black+Decker air purifiers, this pack includes 2 HEPA filters plus 8 extra pre-filters, ensuring prolonged filter life and consistently fresh indoor air.

Specifications

Brand Name	isinlive
Model Info	FLT4825
Product Dimensions	39.88 x 11.94 x 1.52 cm; 390.09 g
Compatible Device	Air Purifier
Material Type	True HEPA Filter
Batteries Included?	No
Batteries Required?	No
Item Weight	390 g

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