glass wool felt advantage: heat insulation, thermal insulation, sound absorption, noise reduction Specifications: 1. Thickness; 25-100mm density: 10-72kg/ m3 Length: 3m-20m width: 1200mm ( PS: Your customizing is also accepted) 2. Competitive price 3. PACKING: Take advanced Vacuum compress technology 4. The largest glass wool manufacturer, CE, AS/ NZS4859.1, ISO, BV, SGS Certificate