FB-8060C-WH Felmenon Hard Acoustic Panel 45C 8060, 8 panels 【Condition】 Used 【Product Details】 Quantity: 8 panels Size: 800 x 600 x 9mm Retail Price (including tax): ¥46,178 【Product Overview】 Felmenon is a hard acoustic felt board made by highly compressing 100% polyester fibers into a high-density board. Wall decoration panels can be easily installed without troublesome construction. These acoustic panels reduce noise in your room while enhancing the space as interior decor. They are highly effective at absorbing mid- to high-frequency sounds around 2000Hz, which people find unpleasant. 【Safety and Security】 The felt boards are produced without using adhesives and are low-formaldehyde products that do not release formaldehyde. The adhesives used in the products also meet the F☆☆☆☆ standard, making them safe for living environments with children. There is also no strong odor after unpacking, which is often found in petroleum products. For more details → https://www.youtube.com/watch?v=fMwl45Y6oAI&t=3s Manufacturer's HP → https://www.dorix.co.jp/lineup/felmenon/ Since they were attached with tape, there are no holes from installation. They were used at home for about a year, attached with tape. As shown in the photos, there is some fuzzing, dust, and dirt, but I believe they are still usable.