AC Infinity 4" Refillable Carbon Filter Kit

Eliminate single-use waste and reduce operating costs with the AC Infinity 4" Refillable Carbon Filter. Winner of the prestigious iF Design Award, this patented air purification system replaces disposable duct filters with a fully replenish-able, eco-friendly design. Engineered for small greenhouses, propagation spaces, and indoor ventilation setups, the AC-RCF4 uses an expanded chamber design that achieves factory-grade carbon compression without requiring manual packing during refilling.

Out of the box, the kit includes enough Australian Virgin RC412 charcoal for two complete fill cycles (1 + refill included), offering the filtration capacity of two standard filters at a fraction of the cost. Twist-off aluminium flanges allow for tool-free carbon changes using the included funnel and scoop set. Constructed with sandblasted, rust-resistant galvanised steel mesh and protective rubber seals, the filter housing withstands high relative humidity levels across multiple growing seasons.

Key Features & Benefits

• Patented Refillable Design: Eliminates single-use metal filter disposal by allowing quick, tool-free replacement of the internal charcoal bedding.

• Includes 1+ Extra Charcoal Refill: Comes supplied with a full replacement bag of Australian RC412 carbon, matching the filtration capacity of two standard 4 inch filters.

• Lab-Tested Odour Elimination: Features an expanded internal chamber that locks carbon into factory-grade compression for high adsorption without airflow restriction.

• Corrosion-Resistant Housing: Constructed with sandblasted galvanised steel mesh and aluminium flanges to withstand humid greenhouse conditions.

• Reversible Flanges: Invert the twist-off end caps to swap airflow direction, ensuring even charcoal consumption before needing a refill.

• Complete Refill Toolkit: Includes a custom-fit funnel and scoop set to make replenishing charcoal clean and straightforward.

Technical Specifications