For 15 years, Denlar Fire Protection has been engineering, manufacturing and selling fail-safe, fully integrated fire suppression range hoods. These installations are required whenever you take a residential range out of the residence where cooking is performed without food being sold. These markets include eldercare facilities, daycares, colleges and universities, teaching kitchens, etc.DFP range hoods are made in the US and help to combat the largest cause of structure fires in the world, unattended cooking fires.