CLOUDLINE S12 – 12″ Duct Fan /w LCD Thermal Control


  • Designed to ventilate hydroponic grow rooms, transfer heating/cooling, cool AV closets, and exhaust odors.
  • Features an 8-speed manual controller utilizing PWM. See T-Series for temperature and humidity controls.
  • Mixed flow design combined with a PWM-controlled EC motor for truly quiet and energy-efficient performance.
  • The kit also includes a corded sensor probe, AC power plug, two duct clamps, and required mounting hardware.
  • Duct Size: 12” | Dimensions: 12.2 x 17.7 x 14.0 in. | Airflow: 1604 CFM | Noise: 62 dBA | Bearings: Dual Ball

(PDF) 20201013 Cloudline Manual


CLOUDLINE S12 – 12″ Duct Fan Product Description

The CLOUDLINE S12 12″ duct fan system is designed to quietly cool AV equipment rooms and closets and to ventilate various air circulation and exhaust projects. Features an inline speed controller utilizing PWM technology. Containing an inline mixed-flow design, the duct fan can maintain airflow even in high static pressure applications. Contains an EC motor for quiet and energy-efficient performance. The motor box containing the fan’s impeller and blades can be detached from the mounted frame for easy cleaning and maintenance. Complete kit includes one duct fan unit, one inline speed controller, installation manual, and all necessary mounting hardware.

Check Out Other CLOUDLINE Series Duct Fans:

CLOUDLINE S4 – 4″ Duct Fan /w Inline Speed Control

CLOUDLINE S6 – 6″ Duct Fan /w Inline Speed Control

CLOUDLINE S8 – 8″ Duct Fan /w Inline Speed Control

CLOUDLINE S10 – 10″ Duct Fan /w Inline Speed Control

Check out AC Infinity’s Grow Tent Ventilation documentation:

Grow Tent Ventilation 101

Precise Speed Controller

The inline speed controller enables you to set the duct fan’s speed to optimal noise and airflow levels for various environments. Unlike common AC-powered duct fans that suppress voltage to control fan speeds, this duct fan features an EC-motor that is precisely controlled using PWM (Pulse Width Modulation). This technology enables the fan’s motor to be able to run smoothly at extremely low RPM speeds without generating motor noises and heat as seen on variable voltage controllers. Eight-speed options are available with a power switch, and backup memory. This S12 model can be connected to the smart controller of the CLOUDLINE T12 to share the same programming and power source.

Quiet and Energy-Efficient Design

The inline fan features a mixed flow design using a stator blade and dual hydrodynamic wind circles. This gives it a high static pressure rating, enabling it to deliver airflow even in applications where air movement is being restricted. The motor houses dual ball bearings rated at 67,000 hours which allows the duct fan unit to be mounted in any direction. The unit is IP44 rated to be highly resistant to dust and liquids and performs well even in harsh environments.


This quiet duct fan system is popular in a variety of applications including cooling AV equipment rooms, closets, racks, and cabinets. Due to its low noise and advanced control features, it’s also used in various air circulation and ventilation projects including hydroponic grow rooms and tents, exhausting bathrooms and attics, and other installations.

   Product Identification
   Manufacturer    AC Infinity Inc.
   Product Name    CLOUDLINE S12
   Product Model    AI-CLS12
   UPC Code    819137021006
   Product and Mounting Dimensions – Fan Unit
   Duct Size    12″
   Total Dimensions    12.28 x 17.71 x 14.05 in. (31.2 x 45.0 x 35.7 cm)
   Mounting Hole-To-Hole Distance    7.00 x 7.12 in. (17.8 x 18.1 cm)
   Screw Hole Size    Ø 0.462 in. (Ø 1.18 cm)
   Cord Length to Controller    240 in. (20 feet)
   Cord Length to Plug    96 in. (8 feet)
   Product and Mounting Dimensions – Controller
   Total Dimensions    3.34 x 2.95 x 0.51 in. (8.5 x 3.6 x 1.3 cm)
   Required Mounting Area    2.95 x 0.51 in. (3.6 x 1.3 cm)
   Hole to Hole Distance    2.87 in. (7.3 cm)
   Screw Hole Size    Ø 0.157 in. (Ø 0.4 cm)
   Product Performance and Technical Specs
   Total Airflow    1604 CFM
   Total Noise    62 dBA
   Static Pressure    818 Pa
   Voltage    100-240V AC
   Frequency    50/60Hz
   Max Power Draw    250 W
   Average Power Usage    139 W
   Current    2.5 A
   Power Connector Type    US Plug (NEMA 1-15 Type-A)
   Operating Humidity    35 to 85% RH
   Operating Temperature    0 to 140°F
   Ingress Protection    IP 44
   Fan Bearings    Dual Ball
   Mounting Positions    Horizontal or Vertical
   L10 Life Expectancy    67,000 Hours
   Fan Quality Approvals    CE, RoHS
   CE Certification (Whole Product)
   CE Certification (Whole Product) AC Infinity – CLOUDLINE Series – CE Certified
   RoHS Cert. (Whole Product)
   Installation Manual AC Infinity – Fans – RoHS Certificate

Additional information

Weight 20 lbs
Dimensions 18 × 17 × 14 in


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