Excellent low frequency sound absorbing design;The best flame retardant;Excellent acoustic properties;Environmentally friendly acoustic foam board Sound absorption, warmth, heat insulation, good elasticity, wall decoration, shockproof, moisture proof, anti-friction. Can be used in residential, recording studios and home theater schools, hosipital Environmental protection, automobiles, ships, architectural decoration, household appliances, etc.; Colour: Black Material: Foam Size: 12*12*24cm Package Contents: 6 PCS * Acoustic Foam Charcoal Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.