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8 Pack 0.5" Thickened Activated Carbon Filters Compatible with LR 4 Connect, Automatic Cat Litter Box Filters Replacement Charcoal Filter Sheet to Absorb Odors Control Pet Damp Keep Home Fresh

  • Based on 147 reviews
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Availability: Only 10 left in stock, order soon!
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Arrives Wednesday, Jun 3
Order within 6 hours and 41 minutes
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Color: 8 Pcs for LR 4 (Thickened 0.5")


Features

  • Pet-Friendly Material: Our filter replacement for cat litter box adopts fiber activated carbon with millions of tiny pores, which increases high absorption and makes the filtration performance more powerful; What's more, this carbon pre filter is non-toxic and tasteless, environmentally friendly, and safe for pets
  • Reduce Odors at Home: This cat litter box filters are aimed at controlling the odor of the litter drawer, reducing the impact of unpleasant water from pets on the air, neutralizing odors in the home and maximizing a fresh home atmosphere; Activated carbon charcoal pads trap urine and feces odors in their pores so your home smells clean and fresh
  • Easy to Replace: Our pictures has nstallation tutorial; You just need to remove the old filter sponge and replace it with the new charcoal litter box filters to finish the installation, which only takes a few minutes without any additional tools and knowledge
  • 8 Pcs for 8 Mth: We offer 8 carbon filters fit for LR 4 and can replace according to your cat's usage patterns; However, in order to best control the odor, it is recommended to replace it once a month, so that your litter box filter system will last about 8 months

Brand: QUEARN


Capacity: 19.87 g


Unit Count: 8.0 Count


Recommended Uses For Product: LR 4


Color: 8 Pcs for LR 4 (Thickened 0.5")


Material: Activated Carbon


Item Form: Bag


Scent: Odorless


Number of Items: 8


Manufacturer: QUEARN


Package Dimensions ‏ : ‎ 10.67 x 9.76 x 2.17 inches; 3.21 ounces


Item model number ‏ : ‎ QUE01006-Carbon Filters-Robot 4


National Stock Number ‏ : ‎ QUE01006-Carbon Filters-Robot 4


Date First Available ‏ : ‎ May 5, 2023


Manufacturer ‏ : ‎ QUEARN


Best Sellers Rank: #6,697 in Pet Supplies (See Top 100 in Pet Supplies) #2 in Cat Litter Box Replacement Air Filters


#2 in Cat Litter Box Replacement Air Filters:


Customer Reviews: 4.6 4.6 out of 5 stars (754)


Capacity: 19.87 g


Unit Count: 8.0 Count


Number of Items: 8


Material Type: Activated Carbon


Color: 8 Pcs for LR 4 (Thickened 0.5")


Item Form: Bag


Scent: Odorless


Brand Name: QUEARN


Recommended Uses For Product: LR 4


Manufacturer: QUEARN


Included Components: Nothing


Manufacturer Warranty Description: No


Item Type Name: litter robot 4 carbon filter


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jun 3

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Works great
Color: 8 Pcs for LR 4 (Thickened 0.5")
It fits the litter robot and is cheaper than the manufacturer’s. Works like it’s supposed to considering it’s just a carbon filter.
Reviewed in the United States on February 26, 2026 by Johnny

  • Great fit
Color: 8 Pcs for LR 4 (Thickened 0.5")
I grit this to go with my whisker robot litter 4. Fits perfectly. Keeps smell down. Reminds me to do a good box cleaning. Best litterbox I have ever purchased and these are great to help it run smoothly
Reviewed in the United States on December 29, 2025 by Jill Kiezebrink

  • Litter Robot 4 filters
Color: 4 Pcs for LR 4 (Thickened 0.5")
Great quality and works as good as brand! Perfect size and thickness and easy to install or change! Great value!
Reviewed in the United States on February 1, 2026 by Christie Shivers

  • Thick replacements compared to original product
Color: 12 Pcs for LR 4 (Thickened 0.5")
These replacement filters fit my Littter Robot 4, but they are much thicker than the originals. Keeping that in mind, I haven't had any issues with them popping out from under the frame, nor causing any issues. I do replace the filter in 2 robots every month, a 12 pack will last me 6 months. Yes - these filters make a big difference in smell and dust so do change them monthly!! ... show more
Reviewed in the United States on June 2, 2025 by Living in the Midwest

  • Great buy for the price
Color: 4 Pcs for LR 4 (Thickened 0.5")
These fit my LR4 perfectly, however I don’t feel like they last as long as the OEM version so you have to replace them more frequently.
Reviewed in the United States on July 18, 2025 by Donnie

  • Good replacement for Whiskers Litter Robot.
Color: 8 Pcs for LR 4 (Thickened 0.5")
Good replacement product for my Whiskers Litter Robot. Seems to take care of oders.
Reviewed in the United States on February 1, 2026 by Charles Wilburn

  • Worth the price!
Color: 8 Pcs for LR 4 (Thickened 0.5")
I was skeptical in buying these because of the mixed reviews but so far I have not had any issues. At first, I thought it was not helping with the smell but after a day, I noticed that the smell was gone and that it actually was working. The filters are not thick but they do the job, which is why I must say they will need to be replaced more often than the originals. They were easy to install and the size was perfect for our litter robot 4. I would say the quality is obviously not like the original brands but you’re getting a pack of 8, so I’d say it’s worth it. ... show more
Reviewed in the United States on November 28, 2025 by Ericka

  • Fits in litter robot 4
Color: 8 Pcs for LR 4 (Thickened 0.5")
Fits great in my litter robot 4 they are thick and effective same as the brand name ones. Wakes a ton of money
Reviewed in the United States on January 21, 2026 by Niko Culnan

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