Kitchen Grease Filters and grease receptacle
Commercial kitchens are normally equipped with large hoods housing grease filters. The air exhausted through the hood is made to abruptly change its direction making the accompanying grease deposit on the "filter." The filter assembly is slightly sloped so that grease drains down into a receptacle. See the handles on the grease filters in the picture? The filters should periodically be taken out and washed. Kitchen hoods exhaust large amounts of air. Provision should be made to provide make-up air in the area. Often "compensating" hoods are used that provide make-up air around the periphery of the hood.