3 configurations on record at Delta Air Lines. The same aircraft name can fly in more than one layout, so the config code is the truth: check the code on your booking rather than the aircraft name.
Your booking will not name the configuration. Open the seat map in your confirmation and read the highest row number on it.
Two configurations share a last row at row 33 (3NF, 3NP), so that answer does not settle it on its own.
| 3NE20C 174M | 3NF | 3NP44C 120M | |
|---|---|---|---|
| Domestic First | 20rows 1-5 | — | 44rows 1-11 |
| Main Cabin | 174rows 10-39 | 120rows 13-33 | — |
| Delta One | — | 16rows 1-8 | — |
| Premium Select | — | 12rows 10-12 | — |
| Economy | — | — | 120rows 13-33 |
| Extra legroom | 60 | not stated | not stated |
| Total | 194 | 148 | 164 |
Only the rows that differ are marked. A figure the source never stated reads as not stated, never as zero.
Every figure on the linked pages was read at a named source with the read date shown.