AC InfinityCLOUDLINE S4, Quiet 100mm Inline Duct Fan with Speed Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics, 4-Inch

AC InfinityCLOUDLINE S4, Quiet 100mm Inline Duct Fan with Speed Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics, 4-Inch

Q: What is the max temp of use for this fan? i see you said 240f, but all other manufacturers with plastic impellers say max temp 140f. are you certain?

Always stay a minimum of 25% below specified temp. At minimum they can warp and and motor performance would be affected

Q: If powered from a switched outlet, will it remember the last speed setting or does that require constant power?

Morning RS, the S4 will not remember your fan speed. It’s a manual setting only. I also have a T4 with a smart controller and it does remember and can be set to auto for heat and humidity. The T4 is for auto exhaust and S4 is intake. If it is your only fan go with the T4. Also, if you have more than 200sf to ventilate go directly to the T6. The are very quiet which is important as my room is under a bedroom. Hope this helps.

Q: How well does this work with a carbon filter?

I have a 350 Cfm Coco/Carbon Fiber filter that I place on the Exit side of my application. I have tested the filter on both the intake and the exit. I found these units Push much better than they Pull. I do have to increase the power by 10% when I install the exit filter, but it's not really an issue in my application.

Product ID: 228868320

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Details

Brand
AC Infinity
Electric fan design
Exhaust Fan
Power source
Power Adapter
Style
Industrial
Product dimensions
17.5D x 18.8W
Room type
Kitchen

💨205 CFM airflow - powerful ventilation

🔇28 dBA noise - whisper-quiet operation

⚙️8-speed PWM controller - precise airflow control

Frequently Bought Together

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Description

💨 Quietly powerful airflow for the savvy pro who demands control.

WHISPER QUIET POWER - Experience robust 205 CFM airflow with barely-there 28 dBA noise—perfect for focused environments.
READY TO INSTALL KIT - Comes complete with power adapter, mounting hardware, and installation manual for hassle-free setup.
TAILORED AIRFLOW CONTROL - 8-speed PWM manual controller lets you dial in the exact ventilation your space demands.
ENERGY EFFICIENT INNOVATION - Mixed flow design paired with EC motor technology ensures maximum airflow with minimal power draw.
VERSATILE VENTILATION SOLUTION - Ideal for grow tents, hydroponics, AV racks, or any space needing odor control and air circulation.

The AC Infinity CLOUDLINE S4 is a 4-inch inline duct fan delivering 205 CFM airflow at an ultra-quiet 28 dBA noise level. Featuring an 8-speed PWM controller and energy-efficient mixed flow EC motor, it’s engineered for precise, whisper-quiet ventilation in grow tents, hydroponics, AV racks, and more. The kit includes all necessary hardware and a power adapter for easy installation.

Specifications

Brand	AC Infinity
Model Number	AI-CLS4
Product Dimensions	9 x 19 x 30 cm; 2.61 kg
Power / Wattage	21 watts
Voltage	240 Volts
Noise Level	28 dB
Special Features	High Velocity, Waterproof
Item Weight	2.61 kg

Have a Question? See What Others Asked

What is the max temp of use for this fan? i see you said 240f, but all other manufacturers with plastic impellers say max temp 140f. are you certain?

If powered from a switched outlet, will it remember the last speed setting or does that require constant power?

How well does this work with a carbon filter?

What is the best way to connect this to 12 or 24 volt system?

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