Print File FB46, 4x6" Film and Print Archival Storage Box, Dimensions: 4-3/8x6-3/8x1-1/8" Deep, Black. Sturdy and Attractive Archival Option is Ideal for Use in Studio or Darkroom 2-Piece Box with Lid Wrapped in Black Textured Material Passes PAT-Safe for Long-Term Storage .090 Binders Board (Twice the Thickness of Normal LM Boxes) Buffered, Acid Free and Lignin Free Black Paper Interior Lining