(360) 800-5535 · Mon–Fri 9am–5pm PST
Earn 79 points for shopping and get $0.79 off your next order. Join Harvest Club for free.
We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.
Tired of unwanted odors escaping your grow space? The AC Infinity 4" Duct XL Premium Carbon Filter is your solution for powerful, reliable air filtration. Engineered to capture and neutralize even the strongest smells, this filter ensures your indoor garden remains discreet and your air stays fresh and clean.
Featuring a thick, 38mm bed of premium Australian Virgin charcoal with a 1200+ IAV rating, it effectively absorbs odors, chemicals, and other airborne impurities without restricting airflow. Its versatile design allows for easy installation as either an intake or exhaust filter, making it a flexible addition to any ventilation setup. For a complete air management solution, pair it with an AC Infinity inline fan.
Features a 38mm bed of 1200+ IAV Australian Virgin charcoal for maximum odor absorption.
Extends the filter's lifespan by allowing you to flip the body and use the entire carbon bed.
Engineered for up to 300 CFM, ensuring powerful ventilation without sacrificing filtration efficiency.
Includes a machine-washable pre-filter cloth to capture dust and prevent carbon residue.
| Specification | Value |
|---|---|
| Duct Opening Size | 4" |
| Total Dimensions | 15.94 x 6.97 in. (40.5 x 17.7 cm) |
| Flange Length | 1.46 in. (3.7 cm) |
| Flange Material | Aluminum |
| Mesh Material | Galvanized Steel |
| Carbon Type | Australian Virgin RC412 |
| Carbon Grade | 1200+ IAV |
| Carbon Thickness | 38 mm |
| Maximum Airflow | 300 CFM |
All sales final. AC Infinity comes with a two-year warranty. Please note this does NOT cover non-durable goods or consumables designed to be recurrently used.
For optimal performance, we recommend replacing your carbon filter every 12 to 18 months, depending on usage and the level of odors and VOCs in your environment. The reversible flange design helps maximize its lifespan.
Yes, this filter is compatible with any 4-inch inline duct fan. However, for seamless integration and performance, we recommend pairing it with an AC Infinity CLOUDLINE S4 or T4 fan.
The pre-filter cloth is machine washable. Simply remove it from the filter, wash it with a gentle cycle, and let it air dry completely before reinstalling.
IAV (Iodine Adsorption Value) is a standard measure of activated carbon's performance. A rating of 1200+ indicates a very high-quality, microporous carbon that is extremely effective at capturing odor molecules and impurities.
We have a helpful article that covers the essentials. Check out our in-depth guide on AC Infinity grow tents and air filter kits for detailed setup information.
This XL model is designed for extended life and is not refillable. If you're looking for a refillable option, consider the AC Infinity 4" Refillable Carbon Filter.
Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)
Equipping home growers, craft producers, and commercial operations across North America since 2016.
