12 Pack Acoustic Studio Absorption Foam Panel-Trapezoidal Triple Soundproof Padding Soundproof Studio FoamAfter opening the vacuum package, soak it in water for 1-3 minutes, gently wring it out, and then place it in a ventilated area to air dry or use a blower to dry. Method 2. Place soundproof panels in a ventilated area for 24-72 hours. Sound-absorbing foam panels are made of flame-retardant and environmentally friendly materials that are safe to use. Cost-effective noise cancellation products can create a perfect listening or recording environment for you. Suitable for professional studio, recording studio, voice studio, control room, rehearsal room, concert hall, podcast, etc., also can be used for church, home theater, professional theater, home studio, office, utility cabinet, etc. It can handle walls, ceilings, doors, etc. It is recommended to stick the tape to the four corners and the center of the back of the acoustic foam panels, and then stick it to the wall. Or you can use spray glue to install the sound-absorbing foam according to your needs. Excellent flexibility. Keep their soundproof functions over time. You just have to take care of it from time to time by vacuuming the dust. Color: Black + Red Material: Polyurethane Size: 30x30x5cm Package Content: 6 * Black Absorption Foam Panels6 * Red Absorption Foam PanelsOnly the above package content, other