500 Micron and 1500 Micron long grain, lignin free mount boards with a pH value of 8. Made from alpha cellulose.  Natural pigments to give a light fastness of 5-6.

401 + 402 1500 Micron - Size: 32 inches x 44 inches - 813mm x 1118mm. Pack of 5 sheets

1401 + 1402 500 Micron - Size: 32 inches x 44 inches - 813mm x 1118mm. pack of 10 sheets