Thank you for viewing! Yamaha 1.2-tatami soundproof room AVITEX CeFine NS Model number: AMDC12H Soundproofing performance: Dr40 Interior equipment: 3 sound adjustment panels, ventilation fan, lighting, 2-outlet power outlet Air conditioner piping: None External dimensions: W1,443 x D1,443 x H2,069 (mm) Internal dimensions: W1,325 x D1,325 x H1,964 (mm) Manufacturer's suggested retail price: 1,221,000 yen I purchased this this year, but I am selling it due to a move. The usage period was short, and the condition was evaluated as "beautiful" by the buyer. No smoking, no pets. Please feel free to ask if you have any questions (^^)