Owens Corning 703 Rigid Fiberglass Boards (RFB) have a dimension of 24" x 48" x 1" inches.
Use this page for ordering a Case of 12 pieces.
For smaller quantities or single pieces, order Owens Corning 703 1 inch Single Pieces here.
For an identical product at a lower price, check out ATS Acoustics Rigid Fiberglass Board 1 Inch.
View Owens Corning Product Information (PDF)
For more detailed information, see Selecting the Right Acoustic Material for a comparison of these materials.