Design your commercial dryer vent cabinet around three non-negotiable priorities: fire-rated materials rated for at least one hour of protection, minimum 4-inch diameter rigid metal ductwork with the shortest possible run to exterior venting, and accessible panels that allow commercial dryer vent cleaning crews to service the system without demolishing your cabinetry. Start by mapping your vent path before building anything—every 90-degree elbow reduces airflow efficiency by approximately 5 feet of straight duct, so plan routes that minimize bends and maximize …
