White on both sides. Board is acid-free all the way through. Acid-free board can trap migrating acids in paper and neutralize it. Use our .028" thick board for intermediate to long-term storage.
Questions And Answers
Question:Is this the proper board for the 7 5/8 x 10 1/2 4mm thick MYLAR bag?
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James
(10/30/2022)
Response:In related products we list KAF40775 which is th 40pt acid-free, buffered board. It is the correct size if you are using the 28pt acid-free board.
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