Yield Lab 4 Inch Booster In-Line Duct Fan – Grow Light Central

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Yield Lab 4 Inch Booster In-Line Duct Fan

  • $4495
  • Reg: $5195

4x Buyer Protection

The 4 inch booster in-line duct fan from Yield Lab increases airflow in hard-to-ventilate rooms. It is durable, quiet, easy to install and it fits into metal or flex ducts. Its strong motor, excellent performance and higher temperature rating sets this booster fan apart. It is rated for both heated and cooled air and perfect for outdoor AND indoor use. It is also available in a 6 inch model.

Please note this booster fan in now made out of plastic, the outside of the item is still metal.


  • 120 CFM
  • 37 watts
  • 0.64 A 
  • Maximum temperature: 142 degrees F
      Diameter 4 inch
      Volume 120 CFM
      Power draw 37 watts
      Amperage 0.64
      Maximum temperature

      142 degrees F

      • Free shipping on all orders over $100 in the continental US.
      • Estimated Arrival: Between May 27 and Jun 3.
      • You will receive tracking info within 24 hours of shipment.
      • Minimum 30-day return policy.
      • Our shipping and returns page has more details, including return info for individual brands.

      Warranty Information

      This product comes with a 30 day warranty against manufacturer defects.

      The warranty is voided if:

      • The product is modified
      • The product is damaged due to natural causes
      • The product is damaged due to an accident
      • The product is vandalized or stolen
      • The product does not get proper or periodic maintenance
      • The product is used in a manner for which it was not intended

      Only parts will be covered under the manufacturer's defect warranty. It is the responsibility of the customer to determine which part is defective. The customer is responsible for repairs or installation of new exchange parts. Only defective parts will be exchanged.

      You may be wondering why you should buy your grow lights from us, instead of other available authorized dealers. Read on for the answers to all your burning questions.


      10 Reasons to Trust Us With Your Business

      1. Customer Service. We are here to help and want the best for you. Use our live chat or email or call us anytime. We are here for you 24/7.
      2. Price Match. If you find a lower online price within 6 months, we will match or even beat it (details here).
      3. Additional third-party price guarantee. We want you to be absolutely secure that you're getting the best price with us, so we've purchased buyer's insurance that also guarantees the lowest price. You're now doubly protected.
      4. Free 4x Buyer's Insurance. In addition to the low price guarantee, you are also covered against any shipping problems, identity theft and terms of service breaches. And it's all on us (details here).
      5. Hassle-Free Returns. If you aren’t absolutely satisfied, return your product within 30-90 days, depending on the brand (details here).
      6. Free Shipping on orders over $100 to the lower 48 states.
      7. No Sales Tax Anywhere (excluding WY).
      8. Authorized Dealers. We only carry American brands whose lights have been extensively tested by real growers. 100% US warranty on all products.
      9. Safe & Secure Systems in place for every payment transaction.
      10. Best Shopping Experience. We hold your hand from day 1 till the end.
      4x Buyer Protection

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