Acoustic Research 11" Speaker Foam Surround Repair Kit - 11 Inch Some of the models that use this foam include: Acoustic Research AR-3, AR3, AR-3a, AR3a, AR-9, AR9, AR-10 pi, AR10pi, AR-10, AR10, AR-11, AR11, AR-58, AR58B, AR58BX, AR58BXI, AR58LS, AR58S, AR58SU, AR-91, AR91, 915, 1210003-2, 1210003, 1210079, 12200003, 1210079-0, 200003, AR78LS, AR-98LS, AR98LS, AR-9LS, AR9LS, 9LSI, AR-LST, LST, TSW-610, TSW610, TSW-910, TSW910 and others that match the measurements Complete 2 speaker foam surround installation kit - 11 inch Same surround that professional reconers use; NOT cheap Chinese imitations! Easy to follow step-by-step installation instructions and videos FREE phone support at 1-800-397-9575 and FREE shipping within the U.S.