AC Infinity CLOUDLINE 4" Air Filtration Kit — 165 CFM Inline Fan, 38mm Carbon Filter, Speed Controller

AC Infinity's 4-inch Air Filtration Kit combines a CLOUDLINE inline fan, speed controller, activated-carbon filter, and 25 ft of flexible ducting to quietly ventilate and reduce odors in small grow tents and rooms.

This all-in-one kit is built for hobby growers, micro-rooms, and anyone who needs a compact ventilation solution that balances airflow, noise control, and odor management. The included CLOUDLINE fan is engineered for silent operation while the thick carbon filter with a prefilter provides substantial adsorption capacity. Everything fits together for fast installation so you can move from unboxing to operating in minutes.

How effective is this kit at moving air and lowering sound?

The CLOUDLINE inline fan in this kit is rated at 165 CFM and operates as quietly as 29 dBA under typical loads, making it suitable for small to medium grow spaces where noise matters. The speed controller gives you fine control to dial in the balance between airflow and acoustics.

• Fan airflow: 165 CFM for efficient air exchange in compact tents.
• Operating noise: as low as 29 dBA when tuned with the controller.
• Included speed controller for variable RPM and energy savings.

What does the carbon filter include, and how does it handle odors?

The carbon filter features a 38 mm thickness and uses more than 1200 IAV (industrial-activated) grams of charcoal media combined with a prefilter cloth to trap and neutralize a wide range of airborne odors. It’s designed for consistent performance over multiple grow cycles when properly maintained.

• Carbon thickness: 38 mm packed with high-capacity charcoal.
• Prefilter cloth protects the carbon and extends service life.
• Factory-matched to the fan for optimized airflow and filtration.

How simple is installation and what components are included?

The kit arrives with everything needed to assemble a working ventilation system: inline fan, speed controller, carbon filter, four-layer flexible ducting, and mounting hardware. The 4" ducting connects securely to both fan and filter and its 25 ft length offers flexible routing options inside or outside the grow area.

• Kit duct size: 4-inch fittings to match compact setups.
• Ducting length: 25 ft of four-layer flexible hose for easy routing.
• Mounting straps and clamps included for quick setup.

How do I maintain the system for best performance?

Maintenance is straightforward: replace or wash the prefilter when dirty, monitor airflow decline as an indicator to change the carbon, and dust or wipe fan blades occasionally. Using the speed controller to reduce run time can also extend filter life.

• Check prefilter monthly and wash or replace as needed.
• Replace carbon filter when airflow or odor control noticeably drops.
• Inspect fan and ducting for dust buildup and clamp tightness quarterly.

Who is this for: The AC Infinity Air Filtration Kit 4" with Speed Controller is ideal for home growers, small hydroponic setups, and anyone who needs a compact, quiet ventilation and odor-control package. If you want a ready-to-install system that balances airflow, low noise, and effective carbon filtration for small to medium enclosures, this kit is a practical, space-saving choice.