100 high-quality and extra thick backing boards to protect comics from bends and creases.

- 100% certified acid free - Excellent volume and rigidity

- Min. 40 pt. high bulk boards, less fibre

- Min 7% calcium carbonate buffered

- Full high quality front side coating

- Precision cut & bright white finishing

- Backing Board dimensions: 171 x 266 mm

- 400 g/m² Backing Board weight

- Made for long-term archival storage

- Fits Ultimate Guard Current Size bags