If you're seeking reliable, cost-effective enclosure cooling, an electrical enclosure cooler from Grainger is your answer. It reduces the temperature inside of your NEMA enclosure to prevent overheating and reduces dust by using filtered air. Install one of these cooling devices inside the enclosure panel today. They come in a range of different sizes to fit almost any device. You can prevent cool air loss by sealing unused openings for conduit and push buttons with a hole seal. This maintains an even, cool temperature year round and is easy to monitor.