A cast iron or sheet metal plate designed to be installed in a boiler, heater, stove, or furnace flue pipe to control the draft, and/or in an air duct to control the passage of air. Excludes valve, butterfly.
NSN 5998-01-442-8461
NSN 5910-00-977-2450
NSN 5965-01-576-9859
NSN 5920-01-631-4334
NSN 5965-01-559-4958
NSN 5925-00-244-0711
NSN 5965-00-503-7572
NSN 6135-00-767-0331
NSN 6685-01-487-8713
NSN 6150-01-469-6911
NSN 6685-00-890-8410
NSN 5950-01-122-4249