12pcs 30x30x2.5cm Soundproofing Acoustic Foam Studio Panels Treatment Sound-absorbing Cotton Noise Absorption Sponge Sound Insulation Specification: Item: Flame-retardant high-density triangular groove sound insulation cotton Colour: Black Material: Polyurethane Dimensions: 30 x 30 x 2.5 cm/11.81*11.81*0.98in Quantity: 12pcs Application: Home sounds (walls, pipes, ceilings, etc.) Noise control in the workplace (walls, partitions, meeting rooms, etc.) Entertainment noise (TV room, walls, ceiling, floor, etc.) Industrial noise control (factory walls, roofs, equipment, doors, control rooms, etc.) Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-3mm measuring deviation due to manual measurement. Included: 12 x Soundproofing Acoustic Foams