The AC Infinity Inline Filter Box is an inline particulate filtration system designed to be positioned at the intake of a ducted ventilation setup, blocking dust, pollen, mould spores, bacteria, and other fine airborne particles before they enter the grow space or living environment. Built from 1 mm cold-rolled steel with a matte black powder-coated finish and aluminium duct flanges, the filter box withstands the high humidity and temperature fluctuations common in grow room environments while maintaining a streamlined, airtight connection to any matching-diameter inline fan.
Each unit ships with a MERV 13-rated pleated air filter capable of trapping particles sized 0.3–1.0 microns at 90% efficiency, covering dust, pollen, bacteria, mould, smog, legionella, tobacco smoke, and sneeze nuclei. The filter sits inside a hinge-sealed chamber with a slide-lock door, lined with a soft neoprene seal that holds the filter firmly in position and prevents unfiltered air from bypassing the media. Replacement filters slide in and out without tools, and the box accepts any standard MERV-rated filter of the correct size, giving growers the flexibility to upgrade filtration grade as needed.
Available in 100 mm (4"), 150 mm (6"), 200 mm (8"), and 250 mm (10") flange sizes, the Air Filter Box pairs directly with AC Infinity's Cloudline series inline fans and supports maximum airflow from 680 m³/h (400 CFM) in the 100 mm configuration up to 4,080 m³/h (2,400 CFM) in the 250 mm model. For a grower running a Cloudline fan on fresh air intake into a sealed tent, fitting an Air Filter Box at the ducting entry point keeps carbon dust, particulates, and airborne pathogens out of the canopy from day one.
MERV 13 Filtration
Traps 0.3–1.0 micron particles at 90% efficiency.
Intake-Ready Design
Fits inline with any matching-diameter duct fan in four flange sizes.
Quick Filter Access
Slide-lock door allows tool-free filter replacement in seconds.
An inline MERV 13 filter box trapping particles sized 0.3–1.0 microns at 90% efficiency, available in four flange sizes for any ducted setup.
1 mm cold-rolled steel body with matte black powder coat and aluminium duct flanges
Hinge-sealed slide-lock door with neoprene lining for an airtight, dust-free chamber seal
Tool-free filter replacement, any standard MERV-rated filter of the correct size accepted
Available in 100 mm (4"), 150 mm (6"), 200 mm (8"), and 250 mm (10") flange sizes
Maximum airflow from 680 m³/h (400 CFM) up to 4,080 m³/h (2,400 CFM) depending on size
Compatible with AC Infinity Cloudline series and all matching-diameter inline duct fans
2-year warranty
Directions for Use
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Disconnect power to all connected fans and appliances before beginning installation.
Position the filter box at the very start of the intake run, it must sit before air enters the fan, not after.
Remove the plastic wrapping from the included MERV 13 filter before use.
Connect the aluminium duct flanges on each end of the filter box to the inline fan on one side and the intake ducting on the other.
Seal all duct connections with aluminium tape to prevent unfiltered air from bypassing the filter box at the joints.
If cold air will be passing through the filter box in a warm ambient environment, be aware that condensation may form on the outer body, allow for appropriate insulation or drainage if needed.
Reconnect power to the fan and confirm airflow is moving correctly through the filter box.
To replace the filter, slide the lock on the hinge-sealed door and open the chamber.
Slide out the spent filter and insert a replacement MERV-rated filter of the correct size, 30.5 × 50.8 × 2.5 cm (12 × 20 × 1 in) for 100 mm (4") and 150 mm (6") models; 35.6 × 50.8 × 2.5 cm (14 × 20 × 1 in) for 200 mm (8") and 250 mm (10") models.
Close and lock the chamber door, confirming the neoprene seal is fully seated before resuming operation.
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
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Key Highlights
Directions for Use
Technical Specifications
Resources
