SKU: 98147639585

AC Infinity Air Filter Box w/ High Efficacy Filter 4-Inch

$107.10 $119.00
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Description

AC Infinity Air Filter Box w/ High Efficacy Filter 4-InchDescription A duct filter box designed for use with inline fans to circulate fresh air and block dust and odors. Built with 1mm thick cold rolled steel and aluminum duct flanges, able to withstand extreme weather. Specifications Product Identification 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. (9. 7 cm) Total Dimensions: 23.

Description
  • A duct filter box designed for use with inline fans to circulate fresh air and block dust and odors.

  • Built with 1mm thick cold-rolled steel and aluminum duct flanges, able to withstand extreme weather.

    • Specifications
  • Product Identification
  • 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. (9.7 cm)
  • Total Dimensions: 23.46 x 8.42 x 11.73 in. (59.6 x 21.4 x 29.8 cm)
  • Flange Size: 3.21 in. (8.2 cm)
  • 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 Sheets
  • Download the user manual: here
    • Kit Contents
  • a standard high efficacy filter that traps particles like dust
  • dirt
  • lint
  • and odor.
  • 23.46 x 8.42 x 11.73" | Fits 4" Inline Fans | 400 CFM Maximum | Accepts 12 x 20 x 1" Filters
  • Product Description: A whole-house air filtration system designed for use with inline duct fans such as the CLOUDLINE Series, to circulate fresh air by blocking particles like dust and dirt from entering your home in intake applications. Each air filter box is built using 1mm thick cold-rolled steel and finished with matte black powder coating. This outer body build comes together with aluminum duct flanges to create a sturdy build capable of withstanding inclement weather. Its low-maintenance design features a hinge-sealed door equipped with a slide lock that provides easy access to the inner chamber. The door is lined with a soft neoprene layer that keeps the filter in place, and dust from seeping inside.
  • Applications: Each air filter box accepts standard MERV filter replacements that slide into the inner chamber's filter slot. Comes included with a high-efficacy pleated air filter, capable of trapping 0.3-1.0 micron-sized particles such as:
  • Dust
  • Odor
  • The duct flanges fit with matching sized 4" inline fans and enable a streamlined installation to create high efficiency filtration in HVAC and grow applications. Attaching the air filter box in the starting end of your ductwork will dramatically reduce suspending particles in the air inside your home. Use with a high static pressure fan like the CLOUDLINE Series of duct fans is highly recommended to ensure maximum filtration.
    • Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 98147639585

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    4.2 ★★★★★
    Based on 1973 reviews
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    Product Reviews
    E
    Verified Purchase
    E
    Fort Morgan, US
    ★★★★★ 5
    Great price...
    Format: Paperback
    Needed this for my EKG course. Price was right.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on February 1, 2026
    L
    Verified Purchase
    LUCIOUS
    Louisville, US
    ★★★★★ 5
    Satisfied
    Format: Paperback, Format: Paperback
    Brand new got here on time, haven’t got to indulge in the content yet but definitely exactly what I ordered.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 10, 2025
    B
    Verified Purchase
    Breanna Geyer
    Belleville, US
    ★★★★★ 5
    EKGs are difficult and I still don’t understand
    Format: Paperback
    Hey I’m in nursing school and I bought this… it’s not the pocket size, it’s actually a full size book. It brought tears to my eyes many times. I have no idea what a 3rd degree block is. Hopefully you can learn and be a good nurse! EKGs are for the doctors to read. So don’t be too hard on yourself. But you should probably know what normal sinus rhythm looks like… 👍🏼
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 22, 2024
    A
    Alex h.
    San Leandro, US
    ★★★★★ 5
    My teacher thinks some of the ekgs are wrong
    Format: Paperback
    Can anyone put me in contact with the author of this book? My ekg/cardiology teacher is slandering her name and saying some of the rhythms she has in this book are wrong. Really upsets me because he is only a nurse and teaching a pre paramedic course. Doctors and cardiologist were the ones who cited this book. The rhythms are correct, my teacher just wants to think he is smarter than everyone else when it comes to cardiology. Otherwise I love this book and very helpful.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on November 8, 2023
    A
    Andrea Lowrey
    Belleville, US
    ★★★★★ 5
    Excellent Book
    Format: Paperback
    As a nurse I struggle sometimes with rhythm recognition for some of the more complicated ones. This book is easy to read with many practice strips to help you comprehend even the complex details. Would highly recommend to anyone who needs to learn EKGs or brush up on their rhythm recognition skills. Great book!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on June 8, 2023

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