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Air curtain cabinets shield the blower mechanism of an air curtain (or air door). Install a door limit switch to activate the air curtain when the door opens. Ensure temperature control in cold climates with an air curtain heater, and recover the air flow with a duct fan installed in ductwork beneath the floor. A quality air circulator can be used as a supplementary cooling fan when temperatures heat up. Come to Grainger for air curtain cabinets, blower motor assemblies and other air curtain parts.