Keepfiling 9 x 12 Music Sheet Protectors, Heavyweight, Glass Clear, Pack of 25, Archival Safe Excellent for protecting 9 x 12 music sheets. For convenient and easy organizing, these are pre-punched with 3 holes to fit a 3-ring 9 x 12 binder. Heavyweight polypropylene for premium protection and long lasting durability. Glass clear material for excellent visibilty. Archival safe and acid free. Sold in a pack of 25 sheets. Matching 9 x 12 binder sold separately with Keepfiling. Pre-punched with 3 holes to fit 3-ring 9 x 12 binders Hole line reinforced with white strip for added toughness Organize into 3-ring 9 x 12 binders for convenience Glass clear material provides excellent clarity to see music sheet No logo or brand name printed Focuses 100% on your contents