Martin Audio C8.1T - Manual (Page 5)

Suitable hole cutting methods will depend on the ceiling structure,
local conditions, personnel, equipment etc and must be determined
by the installer.
Step 2
Place a tile rail either side of the ceiling hole and clip the C-bracket
over the upright edges of the tile rails.
Note the rail orientations – outwards for the C4.8T and C6.8T,
inwards for the C8.1T.
C4.8T & C6.8T rail orientation C-bracket clipped over rail
(rails placed outwards)
C8.1T rail orientation C-bracket clipped over rail
(rails placed inwards)
All material © 2007. Martin Audio Ltd. Subject to change without notice.