The Strategy Series FA-TR4 trim ring/ rough-in bracket, for wall or ceiling-mount applications, installs prior to the drywall and serves as a pattern cut-out for the drywall contractor to finishout the wall leaving the proper opening for a FA97-4 or FA95-4 enclosure This step identifies pre-wire location, expediting sound system installation. Trim ring measures 25 5/ 8" L and will accommodate 3/ 8" to 1 1/ 4" drywall. Mounting holes are provided to match both 16" and 24" center studs. FA-TR4 is construced of #18 gauge galvanized steel. NOTE: Trim ring alone will not allow direct installation of Strategy Series Grilles. An enclosure or FAPR Plaster Ring is required for grille installation.