The LBS8-R1 is engineered to distribute the speaker assembly weight to the ceiling support system in a suspended 2' x 2' or 2' x 4' tile ceiling system. The LBS8-R1 may be used with or without a backbox, depending on local building codes and the speaker-grille combination being installed (torsion grilles require a backbox). Tile bridges are often required, for safety reasons, by local building codes, and for aesthetics to reduce the potential of unsightly ceiling tile sag.