Made from virgin pulp and coated with a 5% alkaline buffer, these ultra-rigid, acid-free paper boards give you superior protection to the leading thick boards you have have used before. Archival Properties: Acid-free; 5% calcium carbonate buffer.
50 Extra Thick, 42pt Paper Backing Boards Our NEW thick boards are an upgrade from standard comic boards, and are 20% thicker than the market-leading thick board. Measuring 6.75″ x 10.5″, these Current Age boards are great for protecting comics produced circa mid-1980’s to present. Thickness: 42ptsQuantity: 50 boardsDimensions: 6.75″ x 10.5″Archival Properties: Acid-free; 5% calcium carbonate buffer coating
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