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 7035-00-870-0290
NSN 5990-01-238-1975
NSN 6610-01-362-8686
NSN 6610-01-177-5033
NSN 6220-01-187-7119
NSN 4140-01-415-1187
NSN 6130-00-564-3622
NSN 6110-00-774-1792
NSN 6610-01-434-4958
NSN 5855-01-177-4751
NSN 5945-00-872-1032
NSN 5950-00-142-0609