Save money and excess waste by ordering Owens Corning 703 4" Single Pieces. For larger quantities of 3 or more pieces, consider Owens Corning 703 4" 3PK here. The boards have a dimension of 24" x 48" x 4."
Owens Corning 703 is probably the most popular material for acoustic absorption and the 4" is especially ideal for low frequency absorption. It is typically covered with fabric and mounted on the walls in a studio, control room, or listening room.
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For more detailed information, see Selecting the Right Acoustic Material for a comparison of these materials.