General description 24 PCS Acoustic Foam Charcoal/Black Bass Trap is designed for sound absorption and soundproofing in studios. These foam panels are ideal for enhancing audio quality by reducing echo and reverberation in corners of rooms. Technical specifications Colour: Black Material: Foam Size: 12 x 12 x 24 cm Package Contents: 24 PCS x Acoustic Foam Charcoal Measurement allowed error: +/- 1-3 cm Other information Note: Light and different displays may cause the color of the item in the picture to differ slightly from the actual product.