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 6650-01-463-8405
NSN 5895-01-315-1172
NSN 5930-01-527-5061
NSN 6150-01-627-2479
NSN 5930-01-272-3464
NSN 6645-01-574-6160
NSN 5960-00-622-9937
NSN 5920-00-269-6178
NSN 6145-01-054-7463
NSN 6650-01-062-8105
NSN 5855-01-539-4296
NSN 6620-01-303-2563