Ventair Ceiling Exhaust Fan with Removalble Fascia - Olson 250 | w/ Built in Backdraft StopperThe Ventair Olson 250 is a robust and efficient side ducted exhaust fan designed for household and horticultural ventilation applications. With a modern white fascia and powerful 280m3 h airflow, it ensures effective extraction of humidity, heat, and odours from grow tents, bathrooms, kitchens, and laundries. Equipped with a 40W premium ball bearing motor, the Olson 250 delivers long lasting performance while maintaining a low noise output of 43dB(A).