Air Box 4+ Stealth 3500 CFM | 12″ flange carbon filter, pre-filter included
USD$ 1,104.95
- Powerful Filtration–Eliminates contaminants, odors, and smoke
- Premium Carbon–100% activated charcoal for max absorption
- Replaceable Filters–High-flow design for effortless maintenance
- ASHRAE Compliant–Meets ASHRAE standards for top efficiency
- Optimized Performance–Enhances airflow efficiency, minimizes strain
- High-Performance Airflow–2.5 WG @ 3500 MAX CFM
- Seamless Installation–Mounts horizontally or vertically in any system
- Airtight Design–Prevents system bleeding for maximum efficiency
- Versatile Use–For commercial, industrial, and residential applications
- Made in the USA–Built with precision for lasting durability
Bundle and Save! See "Frequently Bought Together" items below ⬇
Discount per Quantity
| Quantity | 1 - 5 | 6 - 10 | 11+ |
|---|---|---|---|
| Price | USD$ 1,104.95 | USD$ 1,049.70 | USD$ 994.46 |
| % Discount | - | 5% | 10% |
Description
Specifications
Always In Stock – Air Box models, replacement filters, and Ruck inline fans are ready to ship. Buy Direct from the Manufacturer.
Experience unparalleled air filtration with Air Box Stealth high-flow carbon filters! Quiet yet powerful, this efficient unit eliminates excess heat and circulates fresh, healthy air. Its user-friendly design ensures quick installation, hassle-free maintenance, and seamless integration with any duct or air filtering system. Ideal for industrial, commercial, residential, indoor growing environments.
Set-up
Inline fans obliterate excess heat and humidity and circulates fresh, healthy air. They bring the temperature and humidity down, pushes or pulls odors and other pollutants and pathogens through your air filters. Using an inline fan to bring in cooler air will help you regulate the internal temperature of your space.
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Additional information
| Recommended Airflow: |
1500 @ 0.05 sec contact time |
|---|---|
| Recommended Minimum Airflow: |
1000 cfm |
| Maximum CFM: |
3500 |
| Max. FPM: |
328 |
| Residence Time @ Recommended CFM: |
0.022 Sec |
| Pressure (W.G.) @ Recommended CFM: |
2.5 WG with pre-filter |
| Inlet/Outlet size: |
12" |
| Compatible FANS: |
Ruck Prime 12" or Ruck S-Prime 12" or Ruck Prime EVO EC 12" |
| Prefilter: |
Yes |
| Number of Cartridges: |
4 XL |
| Flange: |
12" |
| Unit size: |
32.50”x 19.25” x 16.25” |
| Outlet size |
12" |
| Total Weight: |
120 lbs |
| Cartridges Size: |
16” x 24” x 1.5” |
| Maximum Operating Temp: |
176 F |
| CTC rate: |
60 |
| Air flow type: |
Designed to push or pull the Air |
Reviews (3)
3 reviews for Air Box 4+ Stealth 3500 CFM | 12″ flange carbon filter, pre-filter included
Shipping & Delivery
Dear Customers,
Please be advised that for deliveries to Alaska, Hawaii, and Puerto Rico, a delivery surcharge may apply. We will notify you of any additional charges before your order ships.
Order processing can take from 3 to 5 business days for Air Box filter units, inline fans, and replacement filters, and up to 4 weeks for custom-built orders. We prioritize orders for essential services such as schools, government and the healthcare industry.
We charge a flat shipping rate on the date of your order.
Please note that freight quotes may vary on the shipment date due to fluctuating fuel prices, brokerage fees, and/or special handling requirements. We do all we can to ship your orders promptly and at the lowest freight cost possible.
📦 Shipping Notice for Air Box 4 & 4+ Units
Due to the size and weight of the Air Box 4 and 4+ units, LTL freight is calculated based on your destination.
We’ve worked hard to keep these rates as fair as possible in today’s volatile shipping market.
To ensure your unit arrives in perfect condition, it is carefully stacked and secured on a pallet for shipment. This protects your order from damage during transit and guarantees your Air Box is delivered safely and ready to use.
Air Box 4 and Air Box 4+ filter units are stacked high on skids for shipping to ensure their protection and prevent any damage during transit.
Additionally, bundles, which include Air Box units and inline fans, may ship from different locations. As a result, one product may arrive before the other.
Thank you for your understanding and continued support
For Air Box shipping policy go here
How to calculate CFM
To calculate the CFM (cubic feet per minute) you need for a room, you can use the following formula:
CFM = (room volume * number of air changes per hour) / 60
Room volume is the cubic footage of the room. To calculate this, multiply the length, width, and height of the room.
Number of air changes per hour is the number of times you want the air in the room to be replaced in an hour. (A good rule of thumb is to aim for 2-3 air changes per hour).
60 is the number of minutes in an hour.
For example:
If a room is 10 feet long, 12 feet wide, and 8 feet high, the room volume would be 960 cubic feet. If you want the air in the room to be replaced 2 times per hour, you would need a fan with a CFM rating of 320.
CFM = (960 cubic feet * 2 air changes per hour) / 60 minutes per hour = 320 cubic feet per minute
It is important to note that this is a general formula. The actual CFM requirements to ventilate a room may vary depending on a number of factors, such as the number of people in the room, the activities taking place in the room, and the type of ventilation system in the room. If you are unsure how many CFM you need, it is always best to consult with a professional.
Here are some additional factors to consider when calculating CFM requirements:
- The number of people in the room. The more people in the room, the more CFM you will need to remove the stale air and replace it with fresh air.
- The activities taking place in the room. Activities that generate heat, such as cooking or exercising, will require more CFM to remove the hot air and replace it with cooler air.
- The type of ventilation system in the room. If the room has a natural ventilation system, such as open windows or doors, you will need less CFM than if the room has a mechanical ventilation system, such as an air conditioner or furnace.
- Type of filter being used. CARBON filters and HEPA filters have different CFM requirements, make sure you check the specs closely
By considering all of these factors, you can determine the correct CFM requirements for your room and ensure that you have the proper ventilation to keep the air fresh, healthy and clean.
Product Capacity
Particulates – Very small solid or liquid substances, such as inorganic / organic compounds and dormant / living organisms, that are light enough to float in air. Microbial – This category represents germs, viruses, and bacteria. These small organisms can only be seen through a microscope, and are present in every environment. Chemical (Gaseous) – Hundreds of gaseous pollutants, covering all combustion gasses and organic chemicals (VOC’s), have been detected in indoor environments. Health effects vary widely and depend on the types, concentrations, frequency and duration of exposure.
3 Components of Poor Indoor Air Quality
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Todd B. –
We installed an Ruck S-Prime 12″ Inline Fan on an exhaust system for a laser cutter/engraver. It was paired with a Air Box 4+ Carbon Filter, which I have reviewed separately. The exhaust system was partially installed during the build-out of an in-house model shop at an architectural firm. Basically, the duct was installed for a portion of the run but fan, filter, and machine connections were not provided. The configuration of the existing ducting was long, convoluted, and undersized. We were concerned about the capability of the system to provide the airflow we were after. Our solution was to increase the duct size over the last section of the system, and install an oversized fan and filter at the end. We were attracted to the Ruck S-Prime Fan for its specifications and simple elegant design. While not made in the USA, the fan’s German origin supported our opinion that it was of high quality. The fan and filter have now been installed and we are very pleased with the air flow provided. More impressive is the quietness of the fan when in operation. It is no problem to have a normal conversation when standing directly under the fan. Our dust collector is significantly louder even though it is located in a separate room. An excellent product.
Todd B. –
We installed an Air Box 4+ Stealth Filter on an exhaust duct for a laser cutter/engraver. The existing duct configuration was leas than ideal due to it’s length and quantity of elbows. We wanted to maximize the airflow yet still wanted an effective filter to eliminate odours associated with laser cutting before being exhausted to the outside. We were impressed with the “folded” configuration of the Air Box charcoal filters which provide a much larger filter surface area and subsequent airflow than a typical stacked filter. The quality of construction is excellent, and we appreciate that Air Box filters are made in the USA. The only questionable feature is very minor. The filter is decorated with a large Air Box 4+ decal. I am generally not a fan of providing free advertising for our equipment manufacturers but can see the value in displaying the company info when the time comes to replace filters. I am also oddly proud to have an Air Box filter in our shop.
Fernando –
I have been using the Air Box filters for over 6 years now and they work great. We have 2 operations with more than 30 units in total and we haven’t had any issues. Great product and amazing customer services.