Surrounds will need to be re-foamed. Repair Part(s) - Average used condition. Recommend disassembly before purchase to compare. This item may fit other models; please, do your independent research. Please see photos for a more detailed description. Outer diameter: 11.75" (298mm), Roll outer diameter: 10.625" (270mm), Cone diameter: 9.25" (235mm), Inner diameter: 8.625" (219mm).