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 6685-00-215-1997
NSN 6110-01-655-3260
NSN 5915-01-292-8800
NSN 5990-01-575-3275
NSN 7035-00-470-4977
NSN 6650-01-367-2949
NSN 5935-01-129-7725
NSN 5855-00-821-7512
NSN 5925-00-216-8767
NSN 6620-01-423-2612
NSN 5999-00-269-5320
NSN 5920-01-280-2334