Clearance: A least 450mm clearance is encouraged within the cooking area to the underside of any grease filter. Extraction Canopies: The commonest variety, these commercial kitchen canopies and hoods draw contaminated air into a hood through ducting, where It is filtered and expelled outside. They primarily remove warmth. This guideline https://grease-tight-extract-duct02334.boyblogguide.com/35825625/indicators-on-grease-tight-extract-ductwork-you-should-know