Stratum Micro – Seamless ContinuityProduct Details:Perforation Type: Micro SquarePerforation Size: 3mmPanel Thickness: 1/2″, 12.5mmColor of Non-Woven Fabric: Off White GreyOpen Rate: 7.1% – 9.8%NRC: Up to .85Board Sizes:900 mm x 2700 mm1200 mm x 2400 mmProduct Data Sheets:Stratum Micro Sonus Souns Round 6/18 Sonus Round 8/18 Sonus Round 10/23 Sonus Round 12/25 Sonus Round 15/30 Sonus Round 20/33 Sonus Square 8/18 Sonus Square 12/25 Sonus Composite 8-12/50 Sonus Composite 12-20/66 Strata Strata 8-15-20 Strata 12-20-35 Stratum Stratum Micro Stratum Round Stratum Slotted Stratum Square Installation Air Cleaning GypSorb® Patent Info Terms & Conditions Sonus Souns Round 6/18 Sonus Round 8/18 Sonus Round 10/23 Sonus Round 12/25 Sonus Round 15/30 Sonus Round 20/33 Sonus Square 8/18 Sonus Square 12/25 Sonus Composite 8-12/50 Sonus Composite 12-20/66 Strata Strata 8-15-20 Strata 12-20-35 Stratum Stratum Micro Stratum Round Stratum Slotted Stratum Square Installation Air Cleaning GypSorb® Patent Info Terms & Conditions Available Sizes: M-1/3 927 (900mm x 2700mm) M-2/4 1224 (1200mm x 2400mm) M-2/6 927 (900mm x 2700mm)