What is opaque/sandblasted?
One side of the glass is sandblasted to give an opaque finish to the glass. You would still be able to see detail through this finish as it does not obscure the glass completely.

If your attaching sandblasted glass to a wall then the sandblasted side would be fitted against the wall using screws and chrome caps.
Obviously adhesive could not be used as this would be visible through the glass, as would any pattern or defect on the wall.We would recommend painting the wall before attaching the glass with screws.