--- product_id: 621966130 title: "12 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" brand: "quearn" price: "HK$259" currency: HKD in_stock: true reviews_count: 13 category: "Quearn" url: https://www.desertcart.hk/products/621966130-12-pack-0-5-thickened-activated-carbon-filters-compatible-lr store_origin: HK region: Hong Kong --- # 12-pack ensures fresh filter replacement for 12 months Eco-friendly, non-toxic, pet-safe fiber activated carbon 0.5" thickened activated carbon for max odor control 12 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 **Brand:** quearn **Price:** HK$259 **Availability:** ✅ In Stock ## Summary > 🐾 Keep your home fresh, your cat happy, and never miss a filter swap! ## Quick Answers - **What is this?** 12 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 by quearn - **How much does it cost?** HK$259 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/621966130-12-pack-0-5-thickened-activated-carbon-filters-compatible-lr) ## Best For - quearn enthusiasts ## Why This Product - Trusted quearn brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Perfect Fit for LR 4:** Specifically designed for LR 4 Connect litter boxes, ensuring seamless compatibility and optimal filtration. - • **Powerful Odor Defense:** Thickened activated carbon traps and neutralizes odors, keeping your home fresh and inviting. - • **Effortless Monthly Swap:** Quick, tool-free installation with clear tutorials—replace filters in minutes to maintain peak performance. - • **Pet-Safe & Eco-Friendly:** Made from natural, non-toxic materials that are safe for your furry friends and the environment. - • **Year-Long Freshness Supply:** 12 filters included, perfectly timed for monthly replacement to keep your litter box odor-free all year. ## Overview This 12-pack of 0.5" thickened activated carbon filters is designed for LR 4 Connect automatic cat litter boxes. Crafted from natural, pet-safe fiber activated carbon, these odor-absorbing filters trap urine and feces smells effectively. Easy to install without tools, each filter lasts about a month, providing a full year of fresh, odor-controlled litter box maintenance. ## Description Good Stuff for Cats Cat Enclosure for Litter Box Robot Heated bed house Recovery Surgical Suit Tub for Small Pet Review: Works great - 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. Review: Great fit - 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 ## 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 - 12 Pcs for 12 Mth: We offer 12 carbon filters fit for model 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 12 months ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CR7KVRL5 | | Best Sellers Rank | #6,552 in Pet Supplies ( See Top 100 in Pet Supplies ) #2 in Cat Litter Box Replacement Air Filters | | Brand | QUEARN | | Brand Name | QUEARN | | Capacity | 19.87 g | | Color | 12 Pcs for LR 4 (Thickened 0.5") | | Customer Reviews | 4.6 out of 5 stars 754 Reviews | | Included Components | Nothing | | Item Form | solid | | Item Weight | 0.13 Kilograms | | Manufacturer | QUEARN | | Manufacturer Warranty Description | No | | Material Feature | Natural | | Material Features | Natural | | Material Type | Activated Carbon | | Number of Items | 12 | | Recommended Uses For Product | LR 4 | | Scent | Odorless | | Unit Count | 12.0 Count | ## Images ![12 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 - Image 1](https://m.media-amazon.com/images/I/81ojJSgvVCL.jpg) ![12 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 - Image 2](https://m.media-amazon.com/images/I/81dYlLgetJL.jpg) ![12 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 - Image 3](https://m.media-amazon.com/images/I/81lLH4TJ90L.jpg) ![12 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 - Image 4](https://m.media-amazon.com/images/I/7166BrcYrbL.jpg) ![12 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 - Image 5](https://m.media-amazon.com/images/I/71o0W1CZ7zL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great *by J***Y on February 26, 2026* 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. ### ⭐⭐⭐⭐⭐ Great fit *by J***K on December 29, 2025* 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 ### ⭐⭐⭐⭐⭐ Litter Robot 4 filters *by C***S on February 1, 2026* Great quality and works as good as brand! Perfect size and thickness and easy to install or change! Great value! --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hk/products/621966130-12-pack-0-5-thickened-activated-carbon-filters-compatible-lr](https://www.desertcart.hk/products/621966130-12-pack-0-5-thickened-activated-carbon-filters-compatible-lr) --- *Product available on Desertcart Hong Kong* *Store origin: HK* *Last updated: 2026-07-06*