Parts & Accessories / Electrical Kitchen Ventilation Ductwork Exhaust Fans Make Up Air Parts & Accessories Hood Filters Hood Accessories Fan Accessories Motors Electrical Variable Frequency Drive (VFD), Used with Demand Control Ventilation and Smart Control Electrical Panels (1 HP Max., 200/240 V, Single or Three Phase Input) $399.99 Add To Cart (Ships Same Day) Variable Frequency Drive (VFD), Used with Demand Control Ventilation and Smart Control Electrical Panels (1-1/2 HP Max., 200/240 V, Single or Three Phase In) $439.99 Add To Cart (Ships Same Day) Variable Frequency Drive (VFD), Used with Demand Control Ventilation and Smart Control Electrical Panels (2 HP Max., 200/240 V, Single or Three Phase Input) $474.99 Add To Cart (Ships Same Day) Variable Frequency Drive (VFD), Used with Demand Control Ventilation and Smart Control Electrical Panels (3 HP Max., 200/240 V, Single or Three Phase Input) $629.99 Add To Cart (Ships Same Day) Variable Frequency Drive (VFD), Used with Demand Control Ventilation and Smart Control Electrical Panels (5 HP Max., 200/240 V, Three Phase) $689.99 Add To Cart (Ships Same Day) Variable Frequency Drive (VFD), Used with Demand Control Ventilation and Smart Control Electrical Panels (5 HP Max., 400/480 V, Three Phase) $714.99 Add To Cart (Ships Same Day)