IWASEMI SQ-a PDW1027 Hard Acoustic Panel (Iwasemi) Sound absorbing material, soundproofing material Color: Gray Size: 225mm x 225mm x Thickness 34mm Sold out product. 5,500 yen per sheet, 10 sheets I intended to use them, but they weren't enough. Some have been opened, but are unused. There are some scratches from storage. 5 unopened sheets, 5 unused but opened sheets. Please refrain from purchasing if you are concerned about minor imperfections.