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AC Infinity RAXIAL S4, Inline Booster Duct Fan with Speed Controller, 4-Inch

AC Infinity

20 total reviews

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Price: $43.99 USD
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Availability: 14 in stock

Estimated Arrival: Between Jun 24 and Jun 29.

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Why Buy From Grow Tents Depot
  • Duct Fan Design: Engineered with the intention of enhancing airflow in HVAC systems and ventilating spaces within homes, such as attics and workshops.
  • Variable Speed Controller: A valuable feature that lets you customize the airflow and noise level to accommodate various applications. This feature allows the fan speed to be fine-tuned to fulfill specific airflow boosting expectations.
  • Unibody Die-Cast Construction: This construction style prevents welded seams thereby decreasing vibration and ensuring a smoother flow of air. The fan includes an AC brushless motor with steel blades and lubricated bearings. It's important to note that it is not recommended for operations with restricted airflow.
  • Product Specifications: The duct size is 4 inches with dimensions of 7.28 x 3.95 x 3.95 inches. It boasts an airflow of 106 CFM and creates a noise level of 28 dBA. The fan uses Dual Ball bearings.
  • Product Details: It is an inline fan designed for duct boosting and increases airflow in heating and air conditioning systems. The fan operates on an easy-to-use knob controller that adjusts fan speed to user desires. Its steel blades have a lifespan of up to 67,000 hours and operate using permanently lubricated dual-ball bearings. It can be mounted horizontally or vertically. The kit includes an AC powered inline booster duct fan, a speed controller with a power plug, mounting screws, and a cable management set.
  • Speed Controller Inclusions: Despite being able to control the fan's speed and power state, by turning the knob the fan speed can be increased or decreased which modifies airflow and noise levels. The speed controller uses a female aviation plug with a metal retainer to tightly secure its connection to the booster duct fan.
  • Versatile Applications: This inline booster fan is robust enough to fit into various applications needing enhanced air delivery. For enhancing airflow from HVAC units and removing stale air and odor, it can be used in a diverse range of household spaces from attics, workshops, kitchens, to basements. Although it is primarily used as an intake fan in indoor gardens, grow rooms, and grow tents, it must be noted that this booster fan cannot be used standalone in high static pressure operations like room ventilation. It is also not intended for use in systems with restricted airflow such as those with carbon filters.
  • Specifications
  • Manufacturer: AC Infinity Inc.
  • Product Name: RAXIAL S4
  • Product Model: AC-RXS4
  • UPC Code: 819137021105
  • Product and Mounting Dimensions - Fan Unit
  • Duct Size: 4 inches
  • Total Dimensions: 7.28 x 3.95 x 3.95 inches
  • Cord Length to Controller: 6 feet
  • Cord Length to Plug: 3 feet
  • Product and Mounting Dimensions - Controller
  • Total Dimensions: 2.95 x 1.49 x 1.18 inches
  • Required Mounting Area: 1.49 x 1.18 inches
  • Hole to Hole Distance: 1.88 inches
  • Screw Hole Size: Æ 0.197 inches
  • Product Performance and Technical Specs
  • Maximum Airflow: 106 CFM
  • Total Noise: 28 dBA
  • Static Pressure: Measures approximately 0.192 inches of water
  • Operating Voltage: 110V-120V AC
  • Power: 15 W
  • Current: 0.15 A
  • Operating Humidity: 35 to 85% Relative Humidity (RH)
  • Operating Temperature: 40 to 140°F
  • Fan Bearings: Dual Ball Bearing
  • Mounting Positions: Horizontal or Vertical
  • L10 Life Expectancy: 67,000 Hours
  • CE Certification: Product is CE certified
  • RoHS Certification: Product is RoHS certified
  • Data Sheet
  • Download the Product Manual: here
  • Download the RoHS 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 20 reviews
    Chris D.
    great inline fan

    Very Quiet and works well I have it set up and a exhaust fan booster for our laser cuter. Would love to see a boosted version with a bigger fan to get more CFM.