Dynamat Dynaxorb Sub Pak &trade; 8 6 X 6 X 1/4 Pieces With Adhesive - Dynamat 11855 Contains Eight 6 x 6 x 1/4 Squares and a Tube of Cyanoacrylate Adhesive Kills Speaker Back Wave and Distortion Use Behind Speakers Mounted in Doors and Tiled Inside Subwoofer Enclosures For Optimal Performance Apply Dynaxorb Over Dynamat Xtreme