About the Half Backs Gold Acid Free Backing Board (Order In 100)

Half-Backs are perfect for your more common comics where extra rigidity is not needed. Boards are made from 100% acid-free virgin wood, cellular fiber, 24 mil. thick cardboard; contains a 3% alkaline buffer and a pH content of 8.0-8.5; and are sold in packs of 100.
7 5/8 x 10 ½