Archival Methods Onyx Portfolio Box | 5 x 7 x 1.4", Black Buckram with White Interior

With a clamshell design, the 5 x 7 x 1.4" Onyx Portfolio Box from Archival Methods flips open to allow easy access to your prints. The interior of the box is lined with an 80 lb acid- and lignin-free white paper. With a depth of 1.4", the clamshell box can accommodate 14x 4/2 ply, 10x 4/4 ply, and 20x 2/2 ply matted prints. The adhesive used in construction is pH balanced, and the archival box has passed the Photographic Activity Test (PAT), which makes the box suitable for long-term storage. The box core is made from a 0.100 Kappa Binder's Board, which is lignin- and acid-free, and the sulfur content has been reduced to <0.0008%. The board has been buffered to keep acidity from transferring to the stored materials. Furthermore, the exterior of the box is bound in a library quality F-Grade Buckram (poly-cotton), which is coated in a moisture-resistant, 100% aqueous acrylic.

• Clamshell Box Design
• Stores 5 x 7" Prints
• Holds Up To 20 Matted 2/2 Ply Prints
• 0.100 Kappa Binder's Board Construction
• White-Lining Interior
• 80 lb, Acid- and Lignin-Free Paper
• Bound in F-Grade Buckram
• Coated in a 100% Aqueous Acrylic
• PAT Tested and Passed

• Archival Methods Onyx Portfolio Box | 5 x 7 x 1.4", Black Buckram with White Interior
• Limited 90-Day Warranty