--- product_id: 411085075 title: "AC Infinity Inline Filter Box 100mm with High Efficacy Filter, Whole House HVAC Filtration Kit, Fits 100mm Inline Duct Fans for Fresh Air Intake and Ventilation, 4-Inch" brand: "ac infinity" price: "SAR 1128" currency: SAR in_stock: true reviews_count: 7 category: "Ac Infinity" url: https://www.desertcart.com.sa/products/411085075-ac-infinity-inline-filter-box-100mm-with-high-efficacy-filter store_origin: SA region: Saudi Arabia --- # MERV 13 high-efficiency filter 400 CFM max airflow 1mm cold-rolled steel build AC Infinity Inline Filter Box 100mm with High Efficacy Filter, Whole House HVAC Filtration Kit, Fits 100mm Inline Duct Fans for Fresh Air Intake and Ventilation, 4-Inch **Brand:** ac infinity **Price:** SAR 1128 **Availability:** βœ… In Stock ## Summary > 🌿 Elevate your air game β€” because fresh air is the new luxury. ## Quick Answers - **What is this?** AC Infinity Inline Filter Box 100mm with High Efficacy Filter, Whole House HVAC Filtration Kit, Fits 100mm Inline Duct Fans for Fresh Air Intake and Ventilation, 4-Inch by ac infinity - **How much does it cost?** SAR 1128 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/products/411085075-ac-infinity-inline-filter-box-100mm-with-high-efficacy-filter) ## Best For - ac infinity enthusiasts ## Why This Product - Trusted ac infinity brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Effortless Maintenance:** Slide lock door with neoprene seal ensures quick, dust-free filter changes without hassle. - β€’ **Seamless Compatibility:** Fits 100mm (4-inch) inline duct fans, including CLOUDLINE S4 and T4 models for easy integration. - β€’ **Breathe Cleaner, Live Better:** MERV 13 filter traps viruses, dust, pollen, and mold spores for healthier indoor air quality. - β€’ **Powerful Airflow, Quiet Operation:** Supports up to 400 CFM airflow while minimizing noise for a peaceful environment. - β€’ **Built to Last, Designed to Perform:** Durable 1mm cold-rolled steel and aluminum flanges withstand extreme weather and daily wear. ## Overview The AC Infinity Inline Filter Box 100mm is a robust HVAC filtration solution featuring a durable 1mm cold-rolled steel frame and a high-efficiency MERV 13 filter. Designed to fit 4-inch inline duct fans, it delivers up to 400 CFM of clean, fresh air while blocking harmful particles like viruses and pollen. Its slide lock door with a neoprene seal allows for easy, dust-free filter replacements, making it an essential upgrade for whole-house ventilation systems. ## Description Product Description A whole-house air filtration system designed for use with inline duct fans such as the CLOUDLINE Series, to circulate fresh air by blocking particles like dust and dirt from entering your home in intake applications. Each air filter box is built using 1mm thick cold-rolled steel and finished with matte black powder coating. This outer body build comes together with aluminum duct flanges to create a sturdy build capable of withstanding inclement weather. Its low-maintenance design features a hinge-sealed door equipped with a slide lock that provides easy access to the inner chamber. The door is lined with a soft neoprene layer that keeps the filter in place and dust from seeping inside. Applications Each air filter box accepts standard MERV filter replacements that slide into the inner chamber’s filter slot. Comes included with a high-efficacy pleated air filter, capable of trapping 0.3-1.0 micron-sized particles such as Dust Dirt Lint Odor The duct flanges fit with matching-sized inline fans and enable a streamlined installation to create high-efficiency filtration in HVAC and grow applications. Attaching the air filter box to the starting end of your ductwork will dramatically reduce suspending particles in the air inside your home. Use with a high static pressure fan like the CLOUDLINE Series of duct fans is highly recommended to ensure maximum filtration. HVAC Filter Box Intake air filtration system designed to circulate fresh air and block particles from entering indoor settings. Home Inline Air Filtration When used with a high static pressure duct fan, filter boxes can not only purify the air with maximum efficiency but also provide light cooling to improve comfort. Place this filter box at the beginning of your ductwork to keep dust, dirt, lint, and odors out, reducing suspending particles inside your home. Sturdy and Weather-Resistant Made of 1mm thick cold-rolled steel and aluminum duct flanges with a matte black powder coating finish encasing the interior filter, held in place by neoprene padding. Easy Access Design Slide lock hatch system provides quick access to the inner chamber's filter slot for direct and speedy replacement, accepting standard-sized MERV filters. High Efficacy Protection Review: Robust, easy installation - Brilliant noise reduction. Very efficient at dust partical collection with it's diagonal filter design Review: Works as it should - Bit pricey but did the job. Keeps intake air clean but needs filter replacing often. Can tell its decent durable build as its metal. Not too noisy however it does have that familiar air ducting noise. ## Features - A duct filter box designed for use with inline fans to circulate fresh air and block contaminants. - Built with 1mm thick cold-rolled steel and aluminum duct flanges, able to withstand extreme weather. - Slide lock door gives easy access to inner chamber while soft neoprene layer creates dust-free seal. - Includes a standard MERV 13 filter that traps particles like viruses, dust, pollen, and mold spores. - 23.46 x 8.42 x 11.73” | Fits 4” Inline Fans | 400 CFM Maximum | Accepts 12 x 20 x 1” Filters ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0921N33Y7 | | Best Sellers Rank | 110,714 in DIY & Tools ( See Top 100 in DIY & Tools ) 579 in Registers, Grilles & Vents | | Brand | AC Infinity | | Brand Name | AC Infinity | | Compatible Devices | CLOUDLINE S4, CLOUDLINE T4 | | Compatible Hvac Systems | Residential | | Compatible devices | CLOUDLINE S4, CLOUDLINE T4 | | Country Of Origin | China | | Customer Reviews | 4.6 out of 5 stars 102 Reviews | | Filter Mounting Type | Slide In | | Filter Shape | Rectangular | | Item Dimensions L x W x Thickness | 59.6L x 21.4W x 29.8Th centimetres | | Item Weight | 6.42 Kilograms | | Item weight | 6.42 Kilograms | | MERV Rating | 13 | | MERV rating | 13 | | Manufacturer | AC Infinity | | Manufacturer Part Number | AC-AFB | | Material | Alloy Steel | | Material Type | Alloy Steel | | Model Number | AC-AFB4 | | Number of Items | 1 | | Product Grade | new | | Product dimensions | 59.6L x 21.4W x 29.8Th centimetres | | UPC | 819137021693 | | Unit Count | 1.0 count | ## Product Details - **Brand:** AC Infinity - **Compatible devices:** CLOUDLINE S4, CLOUDLINE T4 - **Item weight:** 6.42 Kilograms - **MERV rating:** 13 - **Manufacturer:** AC Infinity - **Material:** Alloy Steel - **Number of items:** 1 - **Product dimensions:** 59.6L x 21.4W x 29.8Th centimetres - **Product grade:** new - **UPC:** 819137021693 ## Images ![AC Infinity Inline Filter Box 100mm with High Efficacy Filter, Whole House HVAC Filtration Kit, Fits 100mm Inline Duct Fans for Fresh Air Intake and Ventilation, 4-Inch - Image 1](https://m.media-amazon.com/images/I/41EWnjz-1aS.jpg) ![AC Infinity Inline Filter Box 100mm with High Efficacy Filter, Whole House HVAC Filtration Kit, Fits 100mm Inline Duct Fans for Fresh Air Intake and Ventilation, 4-Inch - Image 2](https://m.media-amazon.com/images/I/51keHQnx4lL.jpg) ![AC Infinity Inline Filter Box 100mm with High Efficacy Filter, Whole House HVAC Filtration Kit, Fits 100mm Inline Duct Fans for Fresh Air Intake and Ventilation, 4-Inch - Image 3](https://m.media-amazon.com/images/I/51NyArbfr0S.jpg) ![AC Infinity Inline Filter Box 100mm with High Efficacy Filter, Whole House HVAC Filtration Kit, Fits 100mm Inline Duct Fans for Fresh Air Intake and Ventilation, 4-Inch - Image 4](https://m.media-amazon.com/images/I/61yP1T29OcL.jpg) ![AC Infinity Inline Filter Box 100mm with High Efficacy Filter, Whole House HVAC Filtration Kit, Fits 100mm Inline Duct Fans for Fresh Air Intake and Ventilation, 4-Inch - Image 5](https://m.media-amazon.com/images/I/61ubRjGZ8mL.jpg) ## Questions & Answers **Q: what filter fits perfect in the 4" filter box?** A: the 4" and 6" filters take 12x20x1" filters; the 8 and 10" box's take 14x20x1" filters **Q: What filter replacement is suggested for the 6" filter box? standard 20x12x1 does not fit.** A: Different brands of filters have different "actual" sizes. Look up the true size of the filter you are using, then check actual filter sizes for different brands that are smaller. **Q: Do the filters trap smoke from pipes or pollen and mildew?** A: No, you need a carbon filter for smoke **Q: Can I use a MERV 17 or HEPA filter instead of a MEV13 filter for additional filtration if they will even fit?** A: I use the HDX FPR 12 Ultimate Allergen with odor reduction. This filter is a higher end filter. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Robust, easy installation *by R***B on 17 February 2026* Brilliant noise reduction. Very efficient at dust partical collection with it's diagonal filter design ### ⭐⭐⭐ Works as it should *by A***S on 27 December 2025* Bit pricey but did the job. Keeps intake air clean but needs filter replacing often. Can tell its decent durable build as its metal. Not too noisy however it does have that familiar air ducting noise. ### ⭐⭐⭐⭐⭐ Merv Filter Box *by O***S on 14 October 2025* Keine Pollen vom Nachbarn mehr , die meine Pflanzen Samen lassen. Wirkt auf den ersten Blick sehr gut verarbeitet. Es ist mein erstes Produkt von AC Infinitiv und ich bin ΓΌberrascht wie gut es ist. ## Frequently Bought Together - AC Infinity Inline Filter Box 4" with High Efficacy Filter, Whole House HVAC Filtration Kit, Fits 4-Inch Inline Duct Fans for Fresh Air Intake and Ventilation - AC Infinity CLOUDLINE PRO S4, Quiet 4” Inline Duct Fan with Speed Controller – EC Motor Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics - AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 8-Feet Long for Heating Cooling Ventilation and Exhaust --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.sa/products/411085075-ac-infinity-inline-filter-box-100mm-with-high-efficacy-filter](https://www.desertcart.com.sa/products/411085075-ac-infinity-inline-filter-box-100mm-with-high-efficacy-filter) --- *Product available on Desertcart Saudi Arabia* *Store origin: SA* *Last updated: 2026-05-30*