Owens Corning 705 Rigid Fiberglass Boards (RFB) is called for in some bass trap and sound absorber designs.

Specs and Features:

• Dimension of 24" x 48" x 2" inches
• A popular alternative to 703 Rigid Fiberglass Board when a stronger and somewhat more durable surface is desired.
• View Owens Corning Product Information (PDF)

If you need 4 or more pieces, order Owens Corning 705 2 inch Case of 4 here.

For a formaldehyde free alternative, consider Knauf Acoustical Insulation 2" 6lb Boards.

To see more detailed information, check out Selecting the Right Acoustic Material for a comparison of all of our insulation materials.