- 1x 4" Refillable Duct Filter
- 2x Washable Pre-Filter Cloths
- 2x Filter Straps
- 2x Rope Clip Hangers
- 1x Steel Scoop
- 1x Carbon Funnel
- 1x Premium Carbon Refill Pack
Ask Sage about this product
AC Infinity 4" Refillable Carbon Filter
$89.99 USD
starting from 0% interest financing from
/mo.
- 38mm bed of Australian RC412 virgin charcoal for odor control
- Dual-layer galvanized steel mesh body resists rust in humid environments
- Fits standard 4 inch ducting and pairs with Cloudline T4 series fans
- View More Details
Shipping Calculated at Checkout
Earn 89 points for shopping and get $0.89 off your next order. Join Harvest Club for free.
Over 50,000 Customers
Trust Trimleaf
Transparent Pricing
Backed w/ price match guarantee
Secure Checkout
SSL encrypted payments
Ask Sage about this product
VOLUME PRICING
Commercial & Bulk Purchasing
We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.
Who This Is For
- You are moving to a refillable setup because tossing entire steel canisters every few months feels like a waste.
- You are prioritizing high-grade carbon because cheaper filters let odors slip through when humidity spikes.
What We Found
- The twist-off flange is the real winner here because it makes swapping carbon a five-minute job instead of a mess.
- We noticed the included scoop and funnel actually keep the charcoal dust down when you are refilling in tight spaces.
What Users Say
- Growers who switched to refillable units say they stopped hoarding empty metal canisters in their garage between runs.
- Users who operate in high humidity say the galvanized steel mesh keeps the unit from rusting during long summer cycles.
AC Infinity 4" Refillable Carbon Filter
Tired of replacing your entire carbon filter every few cycles? The AC Infinity 4" Refillable Carbon Filter offers a smarter, more sustainable solution to eliminate odors in your grow space. This award-winning, patented filter is engineered for the eco-conscious grower who values both performance and long-term savings. Its large chamber and premium Australian virgin charcoal provide superior odor absorption, ensuring your environment remains clean and discreet. Designed to integrate seamlessly with ventilation systems like the AC Infinity Cloudline T4 fan, this filter is built to last through multiple grow cycles in humid conditions, thanks to its durable dual-layer steel mesh construction. When it's time to refresh, simply use a new batch of AC Infinity Activated Carbon Refill to restore peak performance without creating unnecessary waste.
What's Included
Features
♻️
Eco-Friendly Design
Save money and reduce waste by simply refilling the premium charcoal instead of replacing the entire unit.
🔧
Simple Refills
Features twist-off flanges and includes a funnel and scoop, making carbon replacement quick and tool-free.
💪
Built to Last
Constructed with dual-layer, rust-resistant galvanized steel mesh to withstand high humidity across multiple cycles.
🌬️
Superior Filtration
Packed with 38mm of premium-grade Australian RC412 virgin charcoal for maximum odor absorption.
Specifications
| Specification | Value |
|---|---|
| Duct Opening Size | 4 in. |
| Total Dimensions | 11.81 x 7.04 in. (30.0 x 17.9 cm) |
| Flange Length | 1.57 in. (4.0 cm) |
| Flange Material | Aluminum |
| Flange Design | Reversible |
| Mesh Material | Rust-Resistant Galvanized Steel with Gunmetal Finish |
| Carbon Type | Australian Virgin RC412 |
| Carbon Grade | 1200+ IAV |
| Carbon Thickness | 38 mm |
| Maximum Airflow | 210 CFM |
Support & Manuals
FAQs
How often should I replace the carbon in this filter?
The lifespan of the carbon depends on usage, humidity, and the concentration of odors. For typical grow environments, we recommend refilling the carbon every 9 to 12 months to maintain optimal performance.
What's the benefit of a refillable filter over a standard one?
A refillable filter is more cost-effective and environmentally friendly. Instead of disposing of the entire steel and aluminum housing, you only replace the activated carbon. This significantly reduces waste and saves you money over time.
Is this filter compatible with other brands of inline fans?
Yes, this filter has a standard 4-inch flange and is compatible with any 4-inch inline duct fan. For best results and smart control, we recommend pairing it with a fan from the AC Infinity ecosystem, such as the Cloudline T4.
How do I know when it's time to refill the carbon?
You'll know it's time for a refill when you begin to notice odors escaping your ventilation system. A gradual decrease in odor-neutralizing effectiveness is the primary indicator that the carbon has reached its saturation point.
How do I set up my ventilation for the best results?
For optimal odor control, the carbon filter should be placed at the highest point inside your grow tent, as the first component in your exhaust system. Air should be pulled through the filter, into the fan, and then out through the ducting. For a complete walkthrough, check out our in-depth guide on AC Infinity ventilation kits.
Happy To Help
Questions About This Product?
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.)
Why Trimleaf
Equipping home growers, craft producers, and commercial operations across North America since 2016.
10+
Years of Specialist Knowledge
4.8★
1949+ Verified Reviews
50,000+
Growers Served
120+
Top Equipment Brands in Stock