Single piece foam surround(Enough for 1 speaker)This is genuine "filleted" foam with a direct-attach inner lip, not the generic knock-off that others may sell. Some of the models that use this foam include :Boston Accoustics CR-8, CR8, HD-7, HD7 Micro 80pv and others that match the measurements belowDue to occasional variances in Boston Acoustics frames, a few of these models may require you to trim approximately 1/16" off of the outer perimeter. Same surrounds that professional reconers use; THE BEST QUALITY foam available!This is the foam only. Complete repair kits are available in our DIY Foam Surround Repair Kits category. Foam Dimensions------ Surround Bos7 Outer Diameter 6.625" - 168mm Outer Roll Diameter 6.25" - 159mm Cone Diameter 5.375" - 137mm Inner Diameter 4.96" - 126mm Inner Attachment Direct-angle
