Tube has 90 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 6220-00-577-3434
NSN 6645-01-190-4297
NSN 5835-01-029-5602
NSN 6220-00-179-4946
NSN 5998-01-236-9382
NSN 5960-00-045-5317
NSN 6135-01-444-6824
NSN 6240-00-455-6426
NSN 6650-01-485-2351
NSN 5998-01-012-1749
NSN 7035-01-309-6709
NSN 5905-00-565-8807