25sheet 31” X18” Sound Deadener Noise Insulation Acoustic Dampening

High-Quality Material 】 Made from top-quality Butyl material with a fireproof aluminium outer coating, this sound deadening damping mat is and practical to use. Each Sheet 31" x 18". WARNING: California Proposition 65 requires California to publish a list of chemicals known to cause cancer, birth defects or other reproductive harm.