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 7035-01-459-7545
NSN 5990-01-115-9488
NSN 6610-00-633-4338
NSN 5895-00-246-4415
NSN 6240-01-580-1345
NSN 6685-00-317-3370
NSN 6320-01-029-4220
NSN 5915-00-959-5454
NSN 5999-01-286-2297
NSN 5985-01-477-9573
NSN 5999-00-288-5954
NSN 5925-00-529-0441