RAIS Q­-BIC Instructions Manual page 13

Assemble the top plate with the self tapping screws.
For a solid wall installation:
The outermost part of the upper covering
should be broken off before it is assembled
with the two self tapping screws.
The top plate is not used.
N.B.
A 30 degree bend must always be used for a
brick wall.
The legs are fixed onto the box and then
the box can be placed into position.
For a stud wall installation, all three legs
are used.
For a solid wall installation, only the back
leg is used.