A hood with motor you choose when you do not have a central extraction. You can choose to connect your cooker hood to the air exhaust system. The extractor hood exits the vapors to get your kitchen odor free again. If you do not have the option of air exhaust, you can also convert your extractor hood to a recirculation exhaust hood. The extractor hood filters the extracted air thanks to the special charcoal filters and blows clean air back into your kitchen.