The Ruck EMKI 6035 EC 21 is a 1‑phase inline mixed flow box fan designed to deliver quiet, efficient, and reliable ventilation. It features an efficiency-optimized diagonal impeller with CFD-optimized aerodynamics for stable and consistent airflow. The fan is housed in soundproof galvanized sheet steel, providing durability and reduced operating noise. The removable fan unit allows easy maintenance and cleaning. Equipped with a high-efficiency EC motor, the fan provides stepless speed control for energy-efficient operation. Internal electronic temperature monitoring ensures safe and dependable performance. This model is suitable for commercial, industrial, and general ventilation systems requiring low-noise, high-efficiency airflow.