Elmer's Acid-Free Foamboard sheets have a pH rating of 7.3 to 8.5 (regular foamboard has a surface pH of 6.5). Each board is buffered with an alkaline material to maintain the pH level for years. Use these boards when archival, acid-free mounting is desired to protect original artwork. The boards are a slightly off-white color.
|Manufacturer's Part Number||900351|
|Size||32" x 40"|