The Helios Fans ALEF 45 is an air intake element designed for mounting within window frames, enabling regulated fresh air supply through differential pressure control. It features a built-in airflow controller and limiter to maintain consistent ventilation based on pressure differences.
Made entirely from high-quality white polymer, the unit includes an indoor facia, mounting plate, fly screen, and an external cover strip. This combination offers durability and a clean aesthetic while ensuring effective passive ventilation suitable for both residential and commercial environments.