FireFlex Max Wedge Acoustical Foam is designed for controlling low frequency sound while maintaining a Class A (1) fire rating. These acoustical foam wedges withstand constant temperatures up to 320F, as well as meeting all Class 1 regulations for flame spread, smoke density, and fuel contribution. This material is used in anechoic chambers, sound testing facilities, recording and broadcast studios or anywhere maximum absorption is required. FireFlex materials are constructed of lightweight, porous acoustic melamine. The material's internal structure is a spacious cellular complex of slim, flexible webs. These elastic filaments are fiber-free and completely open-celled.FireFlex Max Wedge- Specs.pdf