Holds 4,120 strips with 3 frames, 12 frames in total. Archival grade polyethylene, PVC-free, safe for long-term storage. Suitable for oversized binders, OB-1, box binders. Size: 28.7 x 25.7 cm. Package: 50 x 120 pages (without binder or film). eTone 120 Pack Acid Free Loose Leaf Sleeves for Acid Free 120 Protective Sleeves for Negative Film Storage (50 Pcs) Holds Four 120 Strips with 3 Frames, Total 12 Frames. Archival grade polyethylene, non-PVC for long term storage. Suitable for: oversized binders, OB-1, box binders. Size: 28.7 x 25.7 cm. Packaging: 50 acid-free sleeves for 120 films (without binder or film).