The Helios Fans ALEF 30 is a compact air intake element designed for installation in window frames, providing controlled outside air supply through differential pressure regulation. This unit includes an integrated airflow controller and limiter to ensure a consistent ventilation rate based on the surrounding pressure conditions.
Constructed from high-quality white polymer, the ALEF 30 comes complete with an internal facia panel, mounting plate, fly screen, and external cover strip. This design ensures both durability and an unobtrusive appearance while effectively managing passive ventilation needs. Ideal for use in residential or commercial settings where pressure-regulated fresh air intake is required without mechanical operation.