Introducing STEGO’s Filter Fan Plus series. By rethinking traditional fan systems, STEGO engineers have introduced tangible benefits that enhance efficiency, safety and user experience.
Innovation often starts with refining what already works. This philosophy guided the development of the STEGO Filter Fan Plus series—an advanced cooling solution designed to optimise air performance in control cabinets.
Three key advantages of the Filter Fan Plus Series:
- Air-Flap Technology – maximizes air capacity while ensuring superior protection.
- Twist-Lock System – enables quick, tool-free installation.
- Flexible Airflow Direction – direction of airflow can be IN or OUT
Revolutionising airflow with flap technology
Traditional filter fans rely on filter mats to prevent dust intrusion, but these mats also restrict airflow. STEGO’s innovative approach removes the need for filter mats in air-expelling components, significantly increasing air exchange efficiency. The introduction of flap technology ensures unobstructed airflow while protecting the enclosure from dust and debris. When the fan is inactive, the flaps close automatically, safeguarding the interior.
This improvement enhances cooling performance without modifying existing mounting cut-outs or increasing fan capacity. The result? Smarter, more efficient air circulation.
Seamless Installation with the Twist-Lock System
User experience was a priority in the Filter Fan Plus series. With a six-level twist-lock mechanism, the fan secures into a recess from the outside, no tools required. This intuitive design allows technicians to achieve a stable installation with a simple twist and click. The system is compatible with wall thicknesses from 1 to 4 mm, making it a versatile solution for various cabinet designs.
Customisable airflow: IN or OUT?
Enclosure cooling follows two principles: drawing cool air in (IN) or expelling warm air out (OUT). STEGO provides both configurations:
Airflow direction IN
Opting for a classic design brings us to the FPI system of STEGO filter fans. This is the most recognised method: the filter fan with a filter mat is placed at the bottom and draws outside air into the enclosure. The air rises, cools the inside of the enclosure and forces the warm inside air out of the air outlet. The flap technology allows the warm air to be expelled outwards unimpeded.
Airflow direction OUT
For applications that require trapped heat released from a panel or enclosure faster, STEGO recommends actively expelling the heat using the FPO system. To achieve this, the fan is placed towards the top of the control cabinet and combined with effective flap technology. This way, the heat dissipates faster from this critical area. At the bottom of the control cabinet, an entry filter with a filter mat is required to bring in cool air from outside.
Filter fans remain one of the most effective methods for cooling control enclosure, and the Filter Fan Plus series takes this concept to the next level. With increased airflow, enhanced safety features, and reduced maintenance costs, this system delivers performance and reliability. Independent certifications from VDE and UL attest to its compliance with rigorous safety standards.
When paired with a hose-proof hood accessory, the Filter Fan Plus series achieves an IP56 protection rating, reinforcing its resilience against dust and moisture. By minimizing filter replacements, this solution improves efficiency and reduces operational costs.
With its blend of innovation, performance and practicality, the Filter Fan Plus series sets a new benchmark for enclosure cooling, ensuring optimal conditions with minimal effort.













