A suspended 7th chord is created by adding a flattened 7th degree to any suspended triad. For example, a C7sus chord contains the notes C, F, G and Bb (1, 4, 5 and b7). Here are some common open 7th suspended chord shapes.
C7sus

Db7sus

D7sus

Eb7sus

E7sus

F7sus

F#7sus

G7sus

Ab7sus

A7sus

Bb7sus

B7sus
