AC Infinity CLOUDLINE S Inline Duct Fan with Speed Controller – Quiet, Powerful Ventilation for Grow Tents

The AC Infinity CLOUDLINE S Inline Duct Fan with Speed Controller is a high-performance ventilation fan that delivers quiet, efficient, adjustable airflow for grow tents, hydroponic rooms, indoor gardens, HVAC applications, and other ventilation systems.

Powered by an advanced PWM-controlled EC motor, the CLOUDLINE S Series delivers strong airflow while minimizing energy consumption, motor heat, and operating noise. The included wired 10-speed controller gives growers precise control over fan speed, making it easy to balance ventilation performance with noise and energy use.

Available in multiple duct sizes, the CLOUDLINE S Series suits everything from compact grow tents to large indoor cultivation environments that require high-capacity exhaust and air circulation.

Wired 10-Speed Fan Controller

The included speed controller offers 10 adjustable fan-speed levels, letting you match airflow to the specific needs of your growing environment.

Lower settings are useful when you prefer gentle ventilation or reduced noise, while higher settings provide increased exhaust capacity when you need greater heat or humidity removal.

The controller also retains the last selected speed setting after a power interruption.

Quiet & Energy-Efficient EC Motor

At the heart of the CLOUDLINE S is a highly efficient electronically commutated (EC) motor controlled with PWM (Pulse Width Modulation) technology.

Unlike conventional AC-powered ventilation fans, this advanced motor design provides smooth speed control while reducing unnecessary energy consumption, heat, and motor noise.

Benefits include:

• Quiet operation
• Energy-efficient performance
• Precise speed control
• Reduced motor heat
• Smooth operation at low speeds
• Reliable performance for continuous ventilation

Mixed-Flow Design for Strong Airflow

The CLOUDLINE S Series uses an advanced mixed-flow design with stator blades and hydrodynamic wind circles to maintain effective airflow even when connected to equipment that creates resistance.

This makes the fan ideal for systems using:

• Carbon filters
• Long sections of ducting
• Duct bends and elbows
• Air silencers
• Intake and exhaust systems
• Grow tent ventilation systems

The mixed-flow design helps maintain ventilation performance in applications where static pressure can reduce conventional fans' airflow.

Ideal for Grow Tent Ventilation

Maintaining consistent airflow is an important part of controlling the environment inside an indoor grow tent.

The AC Infinity CLOUDLINE S Inline Duct Fan can exhaust warm or humid air while bringing fresh air into the growing environment.

Paired with compatible ducting and a carbon filter, it can form the foundation of a complete grow tent ventilation system.

It is ideal for:

• Indoor grow tents
• Hydroponic grow rooms
• Indoor gardens
• Propagation environments
• Greenhouses
• Air intake systems
• Exhaust ventilation
• Heat removal
• Humidity management
• Air circulation

Compatible with AC Infinity UIS Controllers

Although the CLOUDLINE S includes its own wired 10-speed controller, it also works with AC Infinity's UIS control platform.

Connecting the fan to a compatible UIS controller lets growers expand their environmental-control system with additional automation and programming features, depending on the controller used.

This makes the CLOUDLINE S an excellent choice for growers who want simple manual speed control today while retaining the ability to upgrade to a more advanced AC Infinity environmental-control system later.

Detachable Motor Assembly for Easier Cleaning

A detachable motor box simplifies maintenance by letting you separate the fan's motor, impeller, and blades from the mounted frame.

This makes routine cleaning easier because the duct system doesn't need to be completely dismantled each time the fan requires maintenance.

Keeping ventilation equipment clean can help maintain consistent airflow and reliable long-term operation.

Dual Ball Bearings for Long-Term Reliability

The CLOUDLINE S Series uses dual ball bearings rated for approximately 67,000 hours of operation.

The bearing design also lets you install the fan in horizontal or vertical orientations, giving you more flexibility when designing a ventilation system.

This can be particularly useful in grow tents and grow rooms where available mounting space may be limited.

IP44-Rated Construction

The fan unit carries an IP44 rating, providing resistance to dust and splashing liquids.

This durable construction makes the CLOUDLINE S suitable for demanding ventilation environments, including indoor horticultural applications where humidity levels may fluctuate.

Available CLOUDLINE S Sizes & Airflow

The CLOUDLINE S Series is available in several duct sizes to accommodate different ventilation requirements:

• CLOUDLINE S4 (AI-CLS4) – 4": up to 205 CFM, approximately 28 dBA
• CLOUDLINE S6 (AI-CLS6) – 6": up to 402 CFM, approximately 32 dBA
• CLOUDLINE S8 (AI-CLS8) – 8": up to 807 CFM, approximately 39 dBA
• CLOUDLINE S10 (AI-CLS10) – 10": up to 1,201 CFM, approximately 48 dBA
• CLOUDLINE S12 (AI-CLS12) – 12": up to 1,604 CFM, approximately 62 dBA
  

Choosing the correct size depends on the volume of the growing area, duct length, carbon-filter resistance, desired air exchanges, and other equipment installed in the ventilation system.

Works with Carbon Filters & Ducting

The CLOUDLINE S can be integrated with compatible AC Infinity carbon filters, flexible ducting, duct clamps, silencers, and ventilation accessories to create a complete air-management system.

A typical grow tent exhaust system may combine:

Carbon Filter → CLOUDLINE S Inline Fan → Ducting → Exhaust

Depending on the installation, you can also position the fan in different locations within the duct system.

More Than Just a Grow Tent Fan

Although especially popular for indoor cultivation, the CLOUDLINE S Series can also be used for many other air-transfer and ventilation applications.

Suitable uses include:

• HVAC air transfer
• Cooling equipment rooms
• AV closets
• Ventilating cabinets
• Exhaust systems
• Fresh-air circulation
• Attic ventilation
• Workshop ventilation
• Heating and cooling transfer

Key Features

• Premium inline duct ventilation fan
• Includes a wired 10-speed controller
• Advanced PWM-controlled EC motor
• Quiet and energy-efficient operation
• Mixed-flow airflow design
• Maintains airflow under higher static pressure
• Compatible with AC Infinity UIS controllers
• Detachable motor and impeller assembly for easier cleaning
• Dual ball bearings
• Approximately 67,000-hour bearing lifespan
• Can be mounted horizontally or vertically
• IP44-rated construction
• Compatible with carbon filters and flexible ducting
• Available in 4", 6", 8", 10", and 12" sizes
• Airflow options ranging from 205 to 1,604 CFM
• Ideal for grow tents, hydroponics, indoor gardens, and ventilation systems

Quiet, Adjustable Ventilation for Indoor Growing

The AC Infinity CLOUDLINE S Inline Duct Fan with Speed Controller combines powerful airflow, low-noise EC motor technology, precise 10-speed adjustment, and flexible installation in one professional ventilation solution.

Whether you're ventilating a compact grow tent or designing a high-capacity indoor cultivation system, the CLOUDLINE S Series offers multiple sizes and airflow ratings to match your setup. Its energy-efficient EC motor, mixed-flow design, UIS compatibility, durable construction, and included speed controller make it a versatile choice for reliable indoor air management.