Pinit Archival-Grade Matboard. 100% pure Alpha-Cellulose. 8 x 10" Matboard with Window Choose from 2 Window Sizes and 18 Matboard Colors SKU: KMB810w (0)No Reviews yet Add to Shopping Cart Details 'Select' Archival-Grade Matboard8 x 10" with Window 100% Pure Alpha Cellulose White Core & Back.4-Ply .060" thick. Buffered, Acid-free, lignin-free.Ch... Details Back Details'Select' Archival-Grade Matboard8 x 10" with Window 100% Pure Alpha Cellulose White Core & Back.4-Ply .060" thick. Buffered, Acid-free, lignin-free.Choose window size - 4 x 6"or 5 x 7"Choose matboard color -18 choices Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review