The Primacoustic IsoPlane is a multi purpose isolation kit for use with monitor speakers, turntables, CD player/burners and other devices. Each kit contains 4 pieces of high-density low compression foam. Each piece measures 12.8" x 4" x 1.5". IsoPlane pads are placed under the device that you want to acoustically isolate or provide vibration protection for. Sold in master packs of 4 and 10 kits.