The JBL MTC-19MR is a mud ring, or plaster ring, with a circular offset that installs before sheetrock, serving as an integral ring extension for drywall "mudding", and forming an edge guide for sheetrock plastering. It is designed for installation mounting of the JBL Control 19CS and Control 19CST series of ceiling installation subwoofers.
MTC-19MR - Mud Ring Construction Bracket for Control 19CS - 6-Pack
MTC-19MR Mud Rings
1 Year Warranty