Okayustic Panel 50mm achieves an alpha w 1.0 and NRC 1.0 when the panel is directly fixed to a wall, displaying broadband characteristics and is ideal for low, medium and high frequency HENAN OKAYorption. - Improved Pinability. - Thermal Performance: 25mm: R 0.68 / 50mm: R 1.4. - Lightweight, Easy to Handle + Install.