I wasn't happy with the other command strip mounting options for opengrid, so I designed one that screws into the opengrid frame from behind. This means that there is a stronger mechanical connection between the grid and the mount itself. That means the command strip will fail before the mount or grid.

Printed in Creality PLA on an AD5M. A 0.2mm layer height, just because that's what I usually print. No supports, 5% 3d honeycomb infill, 3 top layers, 3 bottom layers, and 2 walls. The arrow on the snap points 90° anti-clockwise to the long-direction of the mount.