Add to Cart Compare Quick view JBL Professional JBL MTC-19MR Ring Construction Bracket for Control 19CS, Control 19CST, and Control 226C/T Now: $360.00 Was: Optional Mud (Plaster) Ring Construction Bracket for Control 19CS, Control 19CST, and Control 226C/T. Installs before Sheetrock, Integral Ring Extension for Drywall Mudding. Each Pack Contains 6 Pieces. Now: $360.00 Was: Add to Cart Compare Quick view