Grease duct is both routed by way of a hearth rated shaft enclosure or wrapped with the accepted fire insulating blanket that allows for zero clearances, like that manufactured by 3M. commercialappeal.com wants to ensure the most effective experience for all of our viewers, so we built our website to https://martinfxlzr.webbuzzfeed.com/37289122/commercial-kitchen-extract-systems-can-be-fun-for-anyone