Voicing of Fb Dominant 7

Drop 2 III

Back to Fb7

Space plays and stops
Left hand
Fb2
Right hand
Fb4Cb5Ebb5Ab5
Family
Drop 2

The Drop 2 III voicing of Fb7 stacks Fb, Cb, Ebb and Ab from the bottom up: the root, 5th, minor 7th and major 3rd of the chord.

It's one of the Drop 2 voicings: four-note chords in close position with the second note from the top dropped an octave, played over the root. The others for Fb7 are Drop 2 I, Drop 2 II and Drop 2 IV.