Control on left-hand side
A device used to prevent passage of flame through a ventilating duct while air is flowing.
NSN 6110-01-575-8243
NSN 5935-00-491-2284
NSN 6620-01-401-5356
NSN 6130-01-294-0387
NSN 5998-01-327-2995
NSN 7035-01-066-4127
NSN 6610-01-157-0426
NSN 6650-00-078-5773
NSN 6110-00-225-9021
NSN 5999-00-930-2346
NSN 5915-01-139-3321
NSN 6150-00-860-0538