For the purpose of this classification leaf tobacco shall be divided into the following classes:
Class 1. Flue-cured types.
Class 2. Fire-cured types.
Class 3.1 Air-cured types.
Class 4. Cigar-filler types.
Class 5. Cigar-binder types.
Class 6. Cigar-wrapper types.
Class 7. Miscellaneous domestic types.
Class 8. Foreign-grown cigar-leaf types.
Class 9. Foreign-grown types, other than cigar types.
1Class 3 covers Air-cured tobacco other than cigar leaf. This class may be subdivided as follows: Class 3a, Light Air-cured tobacco, including types 31 and 32, and Class 3b, Dark Air-cured tobacco, including types 35, 36, and 37.
For the purpose of this classification the classes shall be divided into the types and groups set forth in §§30.36 through 30.44.