The Airflow the Air Box 4 Stealth Edition Plus Is Built For
This is commercial equipment and the numbers say so. Maximum is 3500 CFM, recommended is 1500 CFM at 0.05 seconds of contact time, and minimum useful airflow is 1000 CFM. Pressure drop is 2.5 inches water gauge with the pre-filter fitted. The unit measures 32.5 x 19.25 x 16.25 in, weighs 120 lbs, and takes 12 in flanges. Inside are four XL cartridges of 16 x 24 x 1.5 in activated coconut charcoal at a CTC rate of 60. At this weight it wants proper rigging and a structural point, not a tent bar.
Installing a 12 Inch Carbon Filter at This Scale
A 12 inch carbon filter in a box format is usually mounted rather than hung. Two people are the honest minimum for getting it into place. Match the fan to the recommended airflow rather than the maximum. Contact time is what scrubs odour, and running flat out cuts it roughly in half. The pre-filter is not an optional extra here. It holds dust off the carbon, and it decides whether cartridges last a year or half that. Ducting at this diameter carries real static pressure, so keep the runs short and the bends gentle. A unit this size in a room needing only a thousand CFM is capacity nobody uses. Size it to the room rather than to the ceiling of the range, and the media lasts longer for it.
Key Features
- 3500 CFM maximum: With 1500 CFM recommended at 0.05 seconds contact time, which is the design figure.
- Twelve inch flanges: Matches commercial duct runs on both inlet and outlet.
- Four XL cartridges: 16 x 24 x 1.5 in each, thicker than the standard Air Box element.
- Pre-filter included: Holds dust off the carbon, which is what stretches cartridge life.
- 120 lb steel housing: Built to be mounted properly, and it outlives many sets of media.
- CTC rate of 60: A stated carbon activity figure rather than an unquantified claim.
- 176 F maximum operating temperature: A real ceiling for a sealed room carrying heavy lighting load.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Air Box |
| Model | Air Box 4+ Stealth Edition |
| Part Number | HT4754 |
| Maximum Airflow | 3500 CFM |
| Recommended Airflow | 1500 CFM at 0.05 second contact time |
| Minimum Airflow | 1000 CFM |
| Pressure Drop | 2.5 in water gauge with pre-filter |
| Inlet and Outlet | 12 in flanges |
| Unit Size | 32.5 x 19.25 x 16.25 in |
| Weight | 120 lbs |
| Cartridges | 4 XL |
| Cartridge Size | 16 x 24 x 1.5 in |
| Media | 100% activated charcoal, premium virgin coconut |
| CTC Rate | 60 |
| Pre-Filter | Included |
| Max Operating Temperature | 176 F |
| Returns | 14 days from delivery if unused, with a 30% restocking fee and return shipping paid by the customer, per the Air Box manufacturer policy |