Remodeling the kitchen and needed a good fan to keep everything clean. After much reading I settled on this Cosmo 500 CFM unit. It has more airflow than most units and the filter style allows for any moisture and oils to drain into a stainless steel cleanable trough. It has 4 speeds but only used High once to try it, as speed 2 is plenty for most cooking. It only vents through the top using a included 8 inch diameter flex hose. Attractive and highly useful, I would definitely recommend this unit!