
                                                                                Density | 
                                                                        N/A 0.5 to 0.7 lb/ft³ | 
                                                                                Long Term Service Temperature | 
                                                                        N/A 302 ºF | 
                                                                                Baffle Size | 
                                                                        N/A 12 x 48 in | 
                                                                                Note for Baffle Size | 
                                                                        N/A Custom baffle sizes available | 
                                                                                Material | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          Open-cell melamine-based foam WHISPERWAVE™ is made from willtec® foam, which is Class 1 fire-rated for flame spread and smoke density. willtec® natural also meets the corner burn test UL 1715. WHISPERWAVE™ is offered in natural white and gray and can be painted or Hypalon®-coated.  | 
                                                    
                                                                                Fire Resistance | 
                                                                        N/A Class 1 per ASTM E 84 (all finishes) Meets UL 1715 (Willtec® natural) | 
                                                                                Flame Spread per ASTM E 84 | 
                                                                        N/A Natural : 5 Painted : 10 Hypalon®-coated : 25 | 
                                                                                Smoke Density per ASTM E 84 | 
                                                                        N/A Natural : 50 Painted : 10 Hypalon®-coated : 65 | 
                                                                                Microbial Growth | 
                                                                        N/A Passes UL 181, Section 11 | 
                                                                                Fungus Resistance | 
                                                                        N/A Rating No. 0 per ASTM G21 | 
                                                                                Toxicity | 
                                                                        N/A Passes University of Pittsburgh Toxicity of Smoke Emission test | 
                                                                                Finishes | 
                                                                        N/A Artic White Ivory Beige Light Blue Light Gray Medium Gray Dark Gray Black | 
                                                                                Thickness | 
                                                                        N/A 2 in | 
                                                                                Sound Absorption Coefficient @ 125 Hertz (Hz) Frequency per ASTM C423-90a | 
                                                                        N/A 0.13 | 
                                                                                Sound Absorption Coefficient @ 250 Hertz (Hz) Frequency per ASTM C423-90a | 
                                                                        N/A 0.41 | 
                                                                                Sound Absorption Coefficient @ 500 Hertz (Hz) Frequency per ASTM C423-90a | 
                                                                        N/A 1.02 | 
                                                                                Sound Absorption Coefficient @ 1 Kilohertz (Hz) Frequency per ASTM C423-90a | 
                                                                        N/A 1.18 | 
                                                                                Sound Absorption Coefficient @ 2 Kilohertz (Hz) Frequency per ASTM C423-90a | 
                                                                        N/A 1.18 | 
                                                                                Sound Absorption Coefficient @ 4 Kilohertz (Hz) Frequency per ASTM C423-90a | 
                                                                        N/A 1.13 | 
                                                                                Noise Reduction Coefficient (NRC) per ASTM C423-90a | 
                                                                        N/A 0.95 |