Green Millboard (Conservation by Design)

  • Materials that have a pH of 7.0 or higher.
  • Need this item cut to size for a specific project? We can help. More info here.
  • The Photo Activity Test (PAT) is an accelerated test that predicts the affects a material may have on photographic images.
SKU: Millboard


5 - 24 $6.67 - $27.37
25 - 49 $5.67 - $25.78
50 - 99 $5.46 - $23.74
100 + $5.33 - $21.69
$6.67 to $27.37



Conservation by Design Superior Archival Millboard is a high-density, hard-rolled, acid and lignin-free millboard. It is ideal for bookbinders, conservators, box makers, and framers seeking an eco-friendly board that also lives up to the highest archival standards.

Sold by the sheet, 5 sheet minimum. Please note that sheet size can vary slightly.

Superior Millboard is made from 100% recycled material — a mix of archival-quality paper and CXD Premier Archival Folding Boxboard waste (comprised of chemically purified, 100% wood-free, O.B.A.-free, long-fiber kraft that is buffered with calcium carbonate).

With an Elephant Green color that is both light-resistant and bleedproof, Superior Millboard passes the Photographic Activity Test (PAT) developed by the Image Permanence Institute at Rochester Institute of Technology, which remains the ANSI and ISO standard for archival storage and display.

Conservation By Design Superior Archival Millboard has a pH of 7.5 to 9.5 and a density of 1.1.

30.5" x 50" boards are grain long
30.5" x 25" boards are grain short