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 6645-01-008-2720
NSN 5990-00-707-0731
NSN 6240-00-495-6763
NSN 5835-00-513-9680
NSN 6610-01-088-9288
NSN 5950-01-003-6669
NSN 5920-01-212-9504
NSN 5999-01-071-2309
NSN 7035-01-137-8266
NSN 4140-01-649-3377
NSN 6145-01-286-5673
NSN 6320-01-562-1599