What is the fine-grained topic of the following text: Allied Air Enterprises Allied Air Enterprises, founded in 1928, is currently a subsidiary of Lennox International, Inc. A check of the company's product specifications, such as for the Ducane L83 oil furnace provides technical specifications and brochures referring readers to Allied Air Enterprises, Tel: 1-800-448-5872. Only return the topic.
Allied Air Enterprises and its Ducane L83 oil furnace product specifications