Feature: 1. Soft sponge, no dust, high density. 2. Square sound-absorbing sponge with beautiful appearance and well sound insulation characteristics. 3. Square shape to provide little diffusion, making you sound more dynamic. 4. It may combine with the other products, consisting of a wide band absorber, the effect is very well. 5. Applied to studio, piano room, drum room, anchor\u0027s room, home theater, KTV, meeting rooms, instrument rooms, etc. Specification: The soundproof foam can be used for studion or KTV to absorb sound and reduce echoes, bring you perfect music sound enjoyment. Features: Soft sponge, no dust, high density. Square sound-absorbing sponge with beautiful appearance and well sound insulation characteristics. Square shape to provide little diffusion, making you sound more dynamic. It may combine with the other products, consisting of a wide band absorber, the effect is very well. Applied to studio, piano room, drum room, anchor's room, home theater, KTV, meeting rooms, instrument rooms, etc. Specifications: Material: Sponge Type: Low-density(not inflaming retarding), High-density(inflaming retarding) (optional) Color: Blue, Gray, White, Purple, Red, Yellow, Black (optional) Quantity: 1Pc Item Size: 500 * 500 * 50mm / 19.69 * 19.69 * 1.97in Package Weight: Low-density: 120g / 4.23ounces High-density: 200g / 7.05ounces Package Size: 500 * 500 * 50mm / 19.69 * 19.69 * 1.97in Package List: 1 * Soundproof Foam Package List: 1 * Soundproof Foam