AutoGo Soundproofing Material, Acoustic Panel 30cm x 30cm x 0.9cm, Brown, N=52 sheets Thank you for your interest in this product. Please read the following and await your bid. Brand/Manufacturer: AutoGo Retail Price: 1860 yen / 6 sheets (Amazon) [Product Condition] Used for about a month, then removed and stored, so it's like new. It was attached with double-sided tape, but there are no adhesive remnants on the back. [Product Description] ・AutoGo soundproofing material is made of 230kg/m3 density polyester fiber, which combines sound insulation and sound absorption effects, and is a high-density, environmentally friendly material. It effectively absorbs reverberation that occurs in the corners of rooms where sound tends to gather. AutoGo soundproofing material can be used not only for echo prevention in recording studios, but also for noise prevention in general households. ・Because it uses durable polyester material, the sheets are less likely to sag due to vibrations from people walking, allowing for long-term use. It is a material that is not only sound-absorbing but also has excellent flame resistance and heat insulation. (Quoted from Amazon)