The asymmetrical links provide an interesting and elegant look. The larger loop is about a half inch across and at 30 links the chain is a little under 24 inches while at 34 links it is nearly 27 inches.

Loading
The STL files come in off center and turned 45 degrees off axis. The thing files are loaded properly.

Printing
I have printed using default settings (2 shells, 10% infill, 0.2mm) and as solid at 0.1mm layer height directly on acrylic bed.

Removing
Use care to remove as the stem joining the two loops is delicate. Although in principle no links touch, in practice some of the links stick together when printed. To separate the links carefully rotate the joined loops in orthogonal axes.