... In general, the range of sunlight transmission rate is 10-80%, reflection rate is 13-35% Thermal PerformanceHeat transfer ... can be further even dramatically reduced to 0.80 Sound insulation performanceDOUBLE GLAZING glass is ideal sound material ... further 5 dB, DOUBLE GLAZING glass can reduce 80 dB traffic noise to 45 dB, which is ... 12A+5, 6+12A+6, 8+12A+8, 10+12A+10,4+16A+4, 6+16A+6, 4+18A+4 ...