Whisper- Wall Test Results Noise Reduction Coefficien .80            Tested per ASTM-C423 Sound Transmission Rating   42             Testes per ASTM-E90 Freeze Thaw:                                             Tested per ASTM-C666 300 cycles                                                 Average Loss 1%  Salt Scaling:                                               Tested per ASTM-672 25cycles                                                    Loss: 1.5kg/m2 Flame Spread                                             Tested per ASTM-E84 Smoke developed Indices                        CFO=0    FSI=0    CSD=23.2                                                                     SDI=25 FOR ADDITIONAL INFORMATION : PHONE  703-222-9702        FAX   703-222-9733 E-MAIL: INFO@WHISPER-WALL .COM New Sound Absorbing Dry Stack NEXT PAGE