Hunt - Bienfang 100% Cotton Rag Foam Board
When archival quality mounting is needed,
this specialty Foam Board gives a commanding performence.
Its facing paper on each side has
a pH of 8.2 +/- .5 and a calcium carbonate buffer.
Constructed with pure, naturally white cotton fibers,
this Foam Board contains no lignin, alum or harsh chemicals .
Sold in cartons only.