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 6685-01-640-9146
NSN 5925-01-452-0167
NSN 5950-01-154-4061
NSN 6145-00-399-5201
NSN 5975-01-186-9919
NSN 5965-01-444-1322
NSN 6145-01-401-3713
NSN 6620-01-483-5247
NSN 5996-01-323-1500
NSN 6135-01-505-1293
NSN 5996-01-012-3267
NSN 5945-00-115-2281