Will last 7 - 10 years , High Quality and Durable Foam. Great design for low frequency sound absorption Excellent acoustic properties Eco-friendly Acoustic Foam Panels Shapes by demand Features Absorb sound, keep warm, heat insulation, good elasticity, wall decoration shockproof, moisture proof against friction. Usage Can be used in residence, recording studios and home theaters schools, environmental protection, automotive, Marine, architectural decoration, household appliance. ALL acoustical products (charcoal & colors) meet ASTM E84 Class A and California 117 flame retardant specifications. Generally, this means if you were to briefly expose our foam to a flame, the foam will self-extinguish Made in the USA