【High Airtightness Performance】 This building material has a high airtightness of 90K density, providing excellent insulation performance. It is also suitable for large-scale construction. (Please note that there may be chips, stains, dents, and size differences due to being leftover materials.) 【About Shipping】 This product is offered with free shipping, so you can purchase it without worrying about additional costs. (Simple packaging with vinyl.) - Density: High Airtightness 90K - Thickness: 25mm - Size: Approximately 300mm x 900mm - Quantity: 20 sheets - Shipping: Free Basically, returns, exchanges, and refunds are not accepted. However, we can handle shipping accidents, etc. 【Remarks】 Please note that the item may be out of stock due to sales on other sites. Please feel free to consult us about changing the number of sheets or the size. This is a bargain sale for inventory adjustment. We also handle clearance items such as 3, 9, 18, and 36 sheets, as well as processed products. Click here for other products! If you want multiple items, please consult us through the question box. Easy to install to the desired size with a cutter, etc. Regarding bank transfers, if you choose to pay via ATM/convenience store, ■【Important】■ Please inform us of the scheduled transfer date within 24 hours. If we do not receive your notification, we will report you, delete the purchase, and block you. Insulation and sound absorption effects / Glass wool / Fiberglass Glass wool / Heat resistant / Fire resistant / Soundproof / Building materials / Renovation / Repair / Sound absorption / Cold protection / Heat protection / Noise protection / Glass fiber / Construction / Temperature Glass cloth / Insulation material / Soundproofing material / Interior lining / Soundproof / Glass wool / Heat-resistant material / Repair material / Protection / Renovation / Sound absorption / Heat resistant / FRP cloth / Fiberglass / Fender / Exterior / Frame / Old folk house / Cowl / Tent / Sheet / Fabric / Thin / Car / Building materials / Surface / Glass fiber / Soundproof / DIY / Detached house / Apartment / Heatstroke / Experience / Interior / Roofing / Hut / Animals / Roof / Karaoke box / Non-flammable