Gatorfoam is ideal for mounting high-gloss photographs, posters, & other visual displays. Man-made veneer material includes a polystyrene core, & wood fiber laminate surface that resists denting or pits that damage prints. Exceptionally rigid and smooth. Use it for dry mounting (maximum 170° F for 3 minutes) or pressure sensitive mounting. Has pH range of 6.5-7.0 and is unbuffered. 3/16" thick. 10 per package