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.