Those are 12″ paper internal sleeves with a hollow and rounded corners. They’re constructed from 20# heavy-weight paper. Those sleeves are archival high quality: acid-unfastened, and alkaline-unfastened! The paper used to make Those also are qualified through the Sustainable Forestry Initiative, and made with 30% publish client waste. Change your wiped out or torn internal sleeves and clean up your assortment. Those pass over the bare vinyl report and slide right into a jacket or outer sleeve.
Those sleeves are archival high quality: acid unfastened, and alkaline unfastened!
12-1/eight” x 12″ (307.97mm x 304.8mm)