Kitchen exhaust hoods (also known as “range hoods” and “extractor hoods”) are commonly found filtration fan systems located above cooking surfaces such as stoves, designed to evacuate airborne steams, fumes, grease, smoke, and heat. You almost definitely have one in your home — but they’re even more important (and sophisticated) in commercial kitchens, bakeries, grocery stores, production facilities and restaurants. In these settings, it’s common for the kitchen exhaust hood to be combined with fans that draw in fresh air from outside, as well as fire suppression features that can quickly help extinguish a grease fire or unexpected flare-ups.