When opened, the album lies perfectly flat on the backing, allowing for relaxed viewing and mounting. It is covered with Efalin, a noble fine linen paper and has two useful storage pockets. Made with archival-quality pH-neutral, acid-free, lignin-free paper. Size: 37.5 x 30.1 cm Number of pages: 90 pages in black (270 g/m²) Grammage: 270 g/m²