The RMUBRKT1/WBPWR-50 are pan-and-tilt brackets that attach to the rear panel threaded inserts of all RoomMatchUtility loudspeakers, F1 Model 812 Active and Passive loudspeakers as well as the Panaray 402 Series IV. These brackets allow both pitch and yaw adjustments to enable flexible mounting options. WBPWR-50 is outdoor rated for use with outdoor installations of the Panaray 402 Series IV loudspeaker only. Indoor installations of Panaray 402 Series IV can use either bracket. RMUBRKT1/WBPWR-50 fit the 4x M8 threaded inserts (127 x 70 mm) on the rear panel of the F1 Model 812, Panaray402Series IV, RMU208, RMU206 and RMU108 models, as well as the 2x M8 threaded inserts (75 mm spacing) on the rear panel of the RMU105 model.