Tube has 36 fins per ft., conforms to mil-h-16235c
A heat transferring unit utilizing a separate source of steam or hot water as the heat transfer medium. It consists of finned parallel tubes joined together by a header or headers and is designed for installation in the ducts of a forced air circulating system. It may be provided with a flanged outer casing to facilitate mounting of the unit in planned or existing duct work. Circulation of the heated air is achieved by use of a blower or fan not integral with the heating unit.
Classification: Air heaters and hot air distributors, not electrically heated, incorporating a motor-driven fan or blower, and parts thereof, of iron or steel
NSN 6620-01-533-6428
NSN 6645-01-509-3221
NSN 5835-01-027-3931
NSN 6220-01-345-6773
NSN 6240-00-170-5302
NSN 5975-01-111-7119
NSN 5985-01-243-6479
NSN 6110-00-828-0514
NSN 6645-01-211-6502
NSN 6150-01-120-7674
NSN 5965-01-205-6249
NSN 5945-00-281-4578