I have made yet another remix for the command strip + locking snap mount. This time for large 3M command strip. 

I have re-made this model from scratch using the original locking snap in the open-grid models.

The large command strip is thinner than 1 OpenGrid unit and shorter than 3 OpenGrid unit. 

There are 2 versions, the single snap is exactly the length but wider. The dual snap version is longer and wider than command strip. The 2 snaps are 3 grid apart.

There are some intentional tiny cuts on the surface, intended for improving strength. However you might have to change the slicer's resolution setting to make them show up (or just ignore them).

The inner lock part is print in place just like the other models, and use the same tool as in my other 2 models.