S-OTODASU Ⅱ LIGHT 12x12 Assembled Simple Soundproof Room No Fan External Dimensions: W1,340mm x D1,340mm x H1,917mm Internal Dimensions: W1,200mm x D1,200mm x H1,900mm Purchased from Shimamura Music about two and a half years ago and used a few times, but it's in almost new condition with no scratches.