Pinit Archival 32 x 40" Frame Backings .125" thick (1/8"). All white. Acid & lignin-free. Buffered. Indefinite Display.**NEW** SKU: K3240FC18 (0)No Reviews yet Add to Shopping Cart Details 32 x 40" White Foam Board. 125" thick. Lignin-free, acid-free, buffered. Museum Grade Archival. Details Back Details32 x 40" White Foam Board. 125" thick. Lignin-free, acid-free, buffered.Museum Grade Archival. Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review