Chief's PACCC2 is a center channel speaker adapter, allows easy integration of center channel speakers with Chief flat panel mounting solutions. Comes mostly assembled for faster installation. Provides up to 5" (127mm) height adjustment to accommodate varied speaker heights. Fore/aft adjustment to level speaker with front of flat panel. Height adjustment of 3.25" (83mm) to level speakers. Compatible with PNR, PDR, PIW, PWR, MIW, MWR, MWH, PCS, MCS, PFC, PF1, MFC, MF1, FSRV and FTRV.