m11" Speaker Back CoverProduct #: SBC3Provide protection to the back side of the speakers, behind a bulkhead or wall. Covers wire connections and protects the speakers cones. Features: Hide and protect valuable speakersHigh Impact white ABSCompact size fits PolyPlanar MA6600, MA6800, MA6900, and MA5950 speakersSpecifications: Diameter Size: 11"