Stainless steel chimney: powerfully extracts fumes and grease.   Commercial chimney: stainless steel, for effective kitchen ventilation. Stainless steel construction: ensures hygienic, high-volume fume removal. Reliable stainless steel: commercial-grade extraction and air purification. Durable stainless steel: efficiently eliminates kitchen odors and smoke. Key aspects of their work include: Extraction : They use powerful fans to draw in smoke, grease, and odors.   Filtration : Filters within the chimney trap grease particles, and sometimes odors, before the air is expelled or recirculated.   Ventilation : They direct the contaminated air either outside through duct work, or filter it and return it to the kitchen. Durability : The stainless steel construction allows for long term use, and easy cleaning within a harsh commercial kitchen environment.