Yes, a NEMA 1 enclosure can be used outside for a roll-up door if the enclosure is located under an awning.NEMA 1 enclosures are designed to protect electrical equipment from dust, falling dirt and dripping liquids. While they are not waterproof, they can provide adequate protection from the elements when used under an awning.The awning will help to keep the enclosure dry and free of debris, and will also provide some protection from the sun. As long as the enclosure is properly sealed and maintained, it should be able to provide years of trouble-free service in this application. Flag for review