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 4140-00-472-4615
NSN 5975-01-141-7632
NSN 5999-01-339-3747
NSN 6685-01-055-7384
NSN 5895-00-188-8156
NSN 6685-00-949-8962
NSN 5975-00-912-7977
NSN 6130-01-295-5344
NSN 6130-01-590-1403
NSN 6105-00-638-6230
NSN 5950-01-157-9914
NSN 5905-00-828-0105