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AC Infinity CLOUDLINE S4, Quiet Inline Duct Fan System with Speed Controller, 4-Inch

AC Infinity

117 total reviews

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Price: $94.99 USD
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Price: $94.99 USD
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Availability: 25 in stock

Estimated Arrival: Between Jun 24 and Jun 29.

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Why Buy From Grow Tents Depot
  • Quiet Ventilation Design: Created to ventilate grow tents smoothly, transfer heating/cooling to rooms, circulate fresh air and cool down AV closets. The fan operates at a quiet noise level with energy-efficient performance minimizing heat and noise.
  • Wired 10-Speed Fan Controller: Compatible with all UIS controllers boasting intelligent programming. The speed controller allows you to set the duct fan's speed to the optimal noise and airflow levels in different environments. This feature is supported by the inline fan's cutting-edge EC motor controlled using PWM (Pulse Width Modulation) for smooth running at very low RPM speeds without generating motor noises.
  • Mixed Flow Design: Comprises of a stator blade and hydrodynamic wind circles, facilitating airflow delivery in areas with high resistance. The duct size is 4” and it offers an airflow of 205 CFM. The fan is designed with an EC motor that is PWM-controlled, providing energy-efficient performance.
  • Easy Maintenance: The motor box containing the fan's impeller and blades can be detached from the mounted frame, simplifying cleaning and maintenance processes. Also features backup memory that maintains the last speed setting even when power to the controller is interrupted.
  • Resilient and Durable: The unit is rated IP44 for high resistance to dust and liquids, ensuring it operates effectively even in challenging environments. The motor houses dual ball bearings with a life rating of 67,000 hours, allowing you to mount the duct fan unit in any direction.
  • Wide Application: This quiet duct fan system is frequently used in a variety of applications such as cooling AV equipment rooms, closets, racks, and cabinets. Because of its low noise and advanced control features, it's also used in different air circulation and ventilation projects including exhausting bathrooms and attics, and other installations.
  • Specifications
  • Manufacturer: AC Infinity Inc.
  • Product Name: CLOUDLINE S4
  • Product Model: AI-CLS4
  • UPC Code: 819137020290
  • Product and Mounting Dimensions - Fan Unit
  • Duct Size: 4"
  • Total Dimensions: 7.40 x 11.93 x 6.93 in.
  • Mounting Hole-To-Hole Distance: 3.15 x 2.36 in.
  • Screw Hole Size: Ø 0.197 in.
  • Cord Length to Controller: 120 in. (10 feet)
  • Product and Mounting Dimensions - Controller
  • Total Dimensions: 3.34 x 2.95 x 0.51 in.
  • Product Performance and Technical Specs
  • Total Airflow: 205 CFM
  • Total Noise: 28 dBA
  • Max Speed: 2800 RPM
  • Static Pressure: 223 Pa
  • Voltage: 100-240V AC
  • Frequency: 50/60 Hz
  • Max Power Draw: 28 W
  • Average Power Usage: 21 W
  • Current: 0.4 A
  • Power Connector Type: US Plug (NEMA 1-15 Type-A)
  • Operating Humidity: 35 to 85% RH
  • Operating Temperature: 32 to 140°F
  • Ingress Protection: IP 44
  • Fan Bearings: Dual Ball
  • Mounting Positions: Horizontal or Vertical
  • L10 Life Expectancy: 67,000 Hours
  • Data Sheet
  • Download the Product Manual: here
  • Download the IC Certification: here
  • Download the RoHS Certification: here
  • Download the ETL Certification: here
  • Download the SAA Certification: here
  • Download the CE Certification: here
  • Price Match Guarantee
  • Shop safe knowing that Grow Tents Depot offers the lowest prices on all of our products - all the time - guaranteed!
  • We work very hard to ensure that we always have the absolute best prices online, so we make this guarantee knowing that if you find a lower price somewhere else, we will match or even beat our competitor's price! Simply reach out to us with a screenshot and link of our competitor's price (including shipping) and let us make you an offer! If you have already purchased with us and you find a better price within one week of your order, let us know and we will issue a refund for the difference!
  • Our 100% price match guarantee has some limitations:
  • -Promotions such as rebates, "buy one, get one free", and other discounts are not eligible.
  • -The item must be in stock on the competitors website when you request your price match.
  • -The competitor must be an online store and may not have a retail location.
  • -The website cannot be a discounter or auction website (e.g. Amazon, eBay, Overstock, etc.).
  • -The competitor must be an authorized retailer of the product in question.
  • -The price match applies to the item price and the shipping charges but excludes sales tax.
  • -On rare occasions, we reserve the right to refuse a price match if we would incur a loss.
  • Get growing today!
  • Shipping, Returns, and Cancellations
  • Order Confirmation:
  • As soon as your order is placed, an order confirmation e-mail will be sent to you. This means that your order has been successfully entered into our system and that we have pre-authorized your payment method for the purchase. In rare cases, if your product is unavailable or delayed, we will contact you and see if you would like to either wait for your item(s) to become available, change your order, or simply be refunded for your cancelled item(s). If your item(s) are immediately available, we will process your order and arrange for soonest possible shipment. Please note that once the order is processed we are unable to change the shipping address.
  • Order Shipment:
  • We offer FREE SHIPPING on all orders and currently service the lower 48 states. Most items are shipped within 1 to 3 business days and shipping time is typically between 1 to 7 business days. There are some products that have a slightly longer lead time and this will be indicated on the individual product pages if applicable. Once your order has shipped, we will send you the tracking information as soon as it becomes available. If a week or more has gone by and you still have not received the tracking information (or the number is not working), please reach out to us right away at If you are in Alaska, Hawaii, or outside of the US and would like to place an order: we may be able to ship to you, but you will need to reach out to us for a custom shipping quote.
  • Cancellations and Refunds:
  • If you need to cancel your order, please reach out to us as soon as possible. Cancelled orders are subject to a 5% administrative fee (for credit card, debit card, Amazon Pay, Coinbase, and Facebook orders) or an 8% administrative fee (for Shop Pay Installments and Sezzle orders). We can accommodate most cancellation and refund requests, however if a product has been arranged to ship or has shipped, then the item will be treated as a return and will potentially be subject to return shipping costs and restocking fees. Any refunds that may be issued will only be issued to the original payment method used when placing your order and only after the return has been confirmed to be received back in its original condition.
  • Returns:
  • Please see our full return policy at the footer of this page for brand-specific details. A restocking fee of 5-25% may apply on returns within the dates of the brand-specific return policies. If you would like to proceed with a return, please reach out to us to receive the precise return instructions and clarification on the restocking fees for your item(s).
  • Warranty
  • Grow Tents Depot only sells brand new products, never used, and therefore all items come with full manufacturer warranties if offered. Please note that Grow Tents Depot is not responsible for replacing or repairing your product while under warranty as this is the manufacturer's commitment to you. However, Grow Tents Depot would be happy to assist you in getting your product repaired or replaced by coordinating with the manufacturer.
  • If you would like us to assist with a warranty claim, please reach out to support with the following information:
  • Your order number.
  • Your shipping address.
  • A brief description of the issue.
  • Any photos or videos demonstrating the issue.

  • Customer Reviews

    Based on 117 reviews
    Warren Y.
    Bronson's buds

    Ac infinity you guys are absolutely the best company I have ever had the pleasure to work with any issue I have had was addressed in a timely fashion and very helpful thanks again guys and gal's