Acoustic ceiling panel
Acoustic ceiling panel material. Use the type that sticks to the concealed ceiling board of 9 mm thickness by adhesive and staple. Use 9 mm thick, 300 x 600 mm square edge acoustic ceiling panel with the following features.
Made from natural mineral wool
47% relative humidity under 13 degrees Celsius
Sound absorption coefficients NRC = 0.40
Visible Light Reflectance 87-91%
The Fire Insurers Laboratories of Korea Class 1 certified