This group consists of leaves which are medium to heavy in body.
| Grades | Grade names and specifications |
|---|---|
| B1F | Choice Medium-brown Heavy Leaf. |
| Medium body, ripe, firm, oily, elastic, strong, bright finish, deep color intensity, normal width, 95 percent uniform, and 5 percent injury tolerance. | |
| B2F | Fine Medium-brown Heavy Leaf. |
| Medium body, ripe, firm, oily, elastic, strong, clear finish, deep color intensity, normal width, 90 percent uniform, and 10 percent injury tolerance. | |
| B3F | Good Medium-brown Heavy Leaf. |
| Medium body, ripe, firm, oily, semielastic, normal strength, clear finish, moderate color intensity, normal width, 80 percent uniform, and 20 percent injury tolerance. | |
| B4F | Fair Medium-brown Heavy Leaf. |
| Medium body, mature, close, lean in oil, inelastic, weak, dull finish, pale color intensity, narrow, 70 percent uniform, and 30 percent injury tolerance. | |
| B5F | Low Medium-brown Heavy Leaf. |
| Medium body, mature, close, lean in oil, inelastic, weak, dull finish, pale color intensity, narrow, 60 percent uniform, and 30 percent injury tolerance. | |
| B1D | Choice Dark-brown Heavy Leaf. |
| Medium to heavy body, ripe, firm, oily, elastic, strong, bright finish, deep color intensity, normal width, 95 percent uniform and 5 percent injury tolerance. | |
| B2D | Fine Dark-brown Heavy Leaf. |
| Medium to heavy body, ripe, firm, oily, elastic, strong, clear finish, deep color intensity, normal width, 90 percent uniform, and 10 percent injury tolerance. | |
| B3D | Good Dark-brown Heavy Leaf. |
| Medium to heavy body, ripe, firm, oily, semielastic, normal strength, clear finish, moderate color intensity, normal width, 80 percent uniform, and 20 percent injury tolerance. | |
| B4D | Fair Dark-brown Heavy Leaf. |
| Medium to heavy body, mature, close, lean in oil, inelastic, weak, dull finish, pale color intensity, narrow, 70 percent uniform, and 30 percent injury tolerance. | |
| B5D | Low Dark-brown Heavy Leaf. |
| Medium to heavy body, mature, close, lean in oil, inelastic, weak, dull finish, pale color intensity, narrow, 60 percent uniform, and 40 percent injury tolerance. | |
| B3M | Good Mixed Color or Variegated Heavy Leaf. |
| Medium to heavy body, ripe, firm, oily, semielastic, normal strength, clear finish, normal width, 80 percent uniform, and 20 percent injury tolerance. | |
| B4M | Fair Mixed Color or Variegated Heavy Leaf. |
| Medium to heavy body, mature, close, lean in oil, inelastic, weak, dull finish, narrow, 70 percent uniform, and 30 percent injury tolerance. | |
| B5M | Low Mixed Color or Variegated Heavy Leaf. |
| Medium to heavy body, mature, close, lean in oil, inelastic, weak, dull finish, narrow, 60 percent uniform, and 40 percent injury tolerance. | |
| B3VF | Good Greenish Medium-brown Heavy Leaf. |
| Medium body, mature, firm, oily, semielastic, normal strength, clear finish, normal width, 80 percent uniform, and 20 percent injury tolerance. | |
| B4VF | Fair Greenish Medium-brown Heavy Leaf. |
| Medium body, mature, close, lean in oil, inelastic, weak, dull finish, narrow, 70 percent uniform, and 30 percent injury tolerance. | |
| B5VF | Low Greenish Medium-brown Heavy Leaf. |
| Medium body, mature, close, lean in oil, inelastic, weak, dull finish, narrow, 60 percent uniform, and 40 percent injury tolerance. | |
| B3G | Good Green Heavy Leaf. |
| Medium to heavy body, mature, firm, oily, semi- elastic, normal strength, clear finish, normal width, 80 percent uniform, and 20 percent injury tolerance. | |
| B4G | Fair Green Heavy Leaf. |
| Medium to heavy body, mature, close, lean in oil, inelastic, weak, dull finish, narrow, 70 percent uniform, and 30 percent injury tolerance. | |
| B5G | Low Green Heavy Leaf. |
| Medium to heavy body, immature, close, lean in oil, inelastic, weak, dull finish, narrow, 60 percent uniform, and 40 percent injury tolerance. |
[37 FR 13626, July 12, 1972; 37 FR 15501, Aug. 3, 1972, as amended at 49 FR 16757, Apr. 20, 1984; 51 FR 40407, Nov. 7, 1986]