HomeQSC AD-MR6 Flanged Mud Ring Bracket for Pre-Installation of AD-C4T-LP & AD-C6T in Sheetrock or Plaster Surfaces.Flanged Mud Ring Bracket for Pre-Installation of AD-C4T-LP & AD-C6T in Sheetrock or Plaster Surfaces.QSC AD-MR6$170.00PriceQuantityAdd to Cart