Why choose our acoustic panel? 1. Our foam sound panels are professional studio-grade acoustic processing, ideal for audio and video recording, and enhance sound and speech in a room. 2. These acoustic foam wedges are effective sound insulation for standing waves and flapping echoes, especially when used with our corner bass traps and corner blocks. 3. The use of soundproof panels in medium sized areas such as isolation rooms, recording studios, control rooms and recording studios can also reduce back panels and room rings. 4. These noise absorbing panels are ideal for on-site processing production studios, practice rooms, theatres or cinemas, as well as other busy and crowded places such as gyms, subways, stations, offices, schools, etc. Specification (approx.): Material: High quality foam Size :30 * 30 * 2.5 cm (12 inches by 12 inches by 1 inch) Weight :1.91 kg /4 LBS Color: Black/Purple Warm Tips: 1. 1 "X 12" X 12 "Acoustic Panel Studio Foam Wedge is 1" thick and covers an area of 0.25 square meters. 2. The foam will not go bad or fall off as time goe