transparent soundproofing PC board Transparent soundproofing PC board is uses in specially the path,the ... 10-20 years quality guarantee. Product SizeThe PC transparent soundproofing board LT20-1TMThickness2,3,4.5,6.0mmWidth1220,1560 ... ,1820,2050mmLength3050mmResist WeatherGeneral,indoor useProduct SizeThe PC transparent soundproofing board LT20-2TMThickness2,3,4.5,6.0mmWidth1220, ...