




Introducing the Air Filter Box with High Efficacy Filter, 4-Inch - a robust solution engineered to enhance the air quality of your home or grow room. This cutting-edge air filtration system is specifically designed to work in tandem with inline duct fans, including the renowned CLOUDLINE Series, facilitating the circulation of fresh, clean air while preventing the intrusion of harmful particles such as dust, dirt, lint, and odors.
Construction & Design:
Constructed from 1mm thick cold-rolled steel and finished with a sleek matte black powder coating, this air filter box boasts a sturdy build that is resistant to harsh weather conditions. The use of aluminum duct flanges ensures a secure and durable connection to your existing setup. The design incorporates a hinge-sealed door with a slide lock mechanism for easy access to the filter chamber, complemented by a soft neoprene layer to prevent dust infiltration.
Filter Efficiency:
The included high-efficacy pleated air filter is capable of trapping particles sized 0.3-1.0 microns, ensuring that your air is free from common airborne nuisances. The system is designed for low maintenance, with the ability to accept standard MERV filter replacements easily.
Applications & Installation:
The air filter box is compatible with 4” inline fans, making it versatile for both HVAC systems and grow rooms. Its straightforward installation process allows for quick setup, and when paired with a high static pressure fan, it provides unparalleled filtration efficiency, significantly reducing airborne particles in your home.
Technical Specifications:
- Material: Steel (Box), Aluminum (Flange)
- Finish: Matte Black
- Filter Size: Accepts 12 x 20 x 1” Filters
- Airflow Range: 80-400 CFM
- Dimensions: 23.46 x 8.42 x 11.73 inches
Whether you're looking to improve the air quality in your home or maintain a clean environment in your grow room, the Air Filter Box with High Efficacy Filter, 4-Inch offers the perfect blend of durability, efficiency, and ease of use.




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)
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