Box 3 is the mid-neck window, anchored on the scale's third degree — the A at fret 5 in the E minor pentatonic worked example. This is rhythm-guitar country: the window sits under the same frets as the fifth-position barre chords, so lead fills and chord work share a hand position here.
The window, computed (E minor pentatonic)
| String | Frets | Notes |
|---|---|---|
| 6th string (E) | 5 / 7 | A / B |
| 5th string (A) | 5 / 7 | D / E |
| 4th string (D) | 5 / 7 | G / A |
| 3rd string (G) | 4 / 7 | B / D |
| 2nd string (B) | 5 / 8 | E / G |
| 1st string (E) | 5 / 7 | A / B |
Using it
That chord adjacency is worth exploiting deliberately: hold an A-shape barre at fret 5 (see the A shape) and every note of this box is within a finger's reach — the fill between chord hits never requires a position shift. Down a string set, the same window connects box 2 below and box 4 above; the note column in the table names each pitch so the overlaps are checkable by eye. Full scale reference: guitar scales.