BACKINGS for LARGE Paperback. 5-1/8 x 8" .028" thick acid-free board. White both sides. Long-term storage.

Backings for LARGE Paperback.
5-1/8 x 8"
.028" thick Acid-Free Board. White both sides.
Long-term storage.

These backings are not meant to be used as backings for paperbacks and digests, but for packaging thinner items if corresponding sleeves are being used.