Complete 2 speaker foam surround installation kit Some of the models that use this foam include : Marantz 8MKII, LS17A, LS20A, LS1815, LS950, SP1500, SP1515, SP1815, 141W15150, SW-41K1A-01 and others that match the measurements below Same surrounds that professional reconers use; NOT cheap Chinese imitations! Kit includes THE BEST QUALITY foam available. 2 Premium American-made 15" Foam Surrounds (Enough for 2 Speakers) Step-by-step installation instructions 1 Bottle of premium professional-grade adhesive (Nitrile rubber) 1 Adhesive application brush Voice coil shims Foam Dimensions------ Kit 2A15-Marantz Outer Diameter 14.5" - 368mm Outer Roll Diameter 13.625" - 346mm Cone Diameter 12" - 305mm Inner Diameter 11.3" - 287mm Roll Width 7/8" - 22mm Inner Attachment Angled