Product code: 50 Full Backs Silver order Gold 100% Acid Free Backing Boards 7 1/2 X 10 1/2
new and unopened These are the highest quality boards found anywhere! At 42-Mil, these are twice as thick as regular backing boards! Made from 100% acid-free, virgin wood, order cellular fiber, 42 mil. thick cardboard. Contains a 3% alkaline buffer and a pH content of 8.0-8.5. Sold in packs of 50; Measures 7 1/2" x 10 1/2".
new and unopened These are the highest quality boards found anywhere! At 42-Mil, these are twice as thick as regular backing boards! Made from 100% acid-free, virgin wood, order cellular fiber, 42 mil. thick cardboard. Contains a 3% alkaline buffer and a pH content of 8.0-8.5. Sold in packs of 50; Measures 7 1/2" x 10 1/2".