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AC Infinity Air Filter Box with High Efficacy Filter, 4-Inch

AC Infinity

2 total reviews

Regular price
Price: $104.99 USD
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List Price: $0.00 USD
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Price: $104.99 USD
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Availability: 14 in stock

Estimated Arrival: Between Jul 18 and Jul 23.

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Why Buy From Grow Tents Depot
  • Duct Filter Box: This product is engineered for use with inline fans, enabling fresh air circulation and blockage of dust and odors. It is constructed with 1mm thick cold-rolled steel alongside aluminum duct flanges, ensuring durability and the ability to withstand extreme weather conditions.
  • Efficient Design Features: A slide lock door offers easy accessibility to the inner chamber, while its soft neoprene layer serves to create a dust-free seal. The box comes with a standard high efficacy filter that effectively traps particles like dust, dirt, lint, and odor.
  • Dimensions and Capabilities: The duct filter box measures 23.46 x 8.42 x 11.73 inches, fits 4” inline fans, offers 400 CFM maximum, and accepts 12 x 20 x 1” filters.
  • Whole-House Air Filtration System: The design is intended for use with inline duct fans, like the CLOUDLINE Series, to circulate fresh air by blocking particles like dust and dirt from entering your home. A hinge-sealed door provides easy access to the inner chamber while keeping the filter in place and preventing dust.
  • Applications: The air filter box uses standard MERV filter replacements that slide into the chamber’s filter slot. The included high-efficacy pleated air filter is capable of trapping particles ranging from 0.3-1.0 microns, such as dust, dirt, lint, and odor. The duct flanges are compatible with 4” inline fans, facilitating efficient installation for HVAC and grow applications. Using this in the starting end of your ductwork will dramatically reduce airborne particles in your home. Use with a high static pressure fan, like the CLOUDLINE Series of duct fans, is highly recommended for maximum filtration.
  • Specifications
  • Manufacturer: AC Infinity Inc.
  • Product Name: Air Filter Box 4"
  • Product Model: AC-AFB4
  • UPC Code: 819137021693
  • Product and Mounting Dimensions
  • Duct Opening Size: 3.81 in.
  • Total Dimensions: 23.46 x 8.42 x 11.73 in.
  • Flange Size: 3.21 in.
  • Product Performance and Technical Specs
  • Box Material: Steel
  • Flange Material: Aluminum
  • Finish: Matte Black
  • Filter Size: Accepts 12 x 20 x 1”
  • Minimum Airflow Range: 80-120 CFM
  • Maximum Airflow: 400 CFM
  • Compatible Fan Models: CLOUDLINE S4, CLOUDLINE T4
  • Data Sheet
  • Download the Product Manual: here
  • Bulk Discount
  • Buy 2 or more of this item and receive $5 off each at checkout!
  • 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 2 reviews
    C N.
    Nothing like it

    I've been waiting for something like this for a long time. Paired with the T4 and the 67 controller, it works perfect as expected. Only wish the filter size was available at local hardware stores.