The FA136 has been engineered as a system with a high performance matched enclosure, choice of transformers and attractive grilles. Strategy Series high performance enclosure Model FA97-6 is a deep backbox with a volume of (.17 ft3) complete with acoustic batting. The enclosure front-loads the loudspeaker, is offered with and without knockouts (NK) and installs quickly and easily into the ceiling using only a screwdriver to adjust the rotating clamps, or to tighten conventional screws. For limited depth installations, mounting ring Model FAPR-6 and low profile enclosure model FA95-6 are offered. Grilles are equipped with three serrated studs for hardware-free, push-on installation.