ActronAir Louvre Motor (Horizontal) suits WRE-026CS to WRE-090DS is the genuine replacement horizontal louvre motor for WRE and WRC wall split system indoor units, driving the horizontal louvre blade assembly that directs conditioned airflow across the room. A failed louvre motor leaves the louvre blades in a fixed position -- the system will continue to operate but cannot direct airflow, reducing comfort and efficiency. Ensure power is isolated before replacing the louvre motor.