Studio : Archival Methods Publisher : Archival Methods Binding : Electronics Product Description Acid Free Foamboard is perfect for structural backing in picture framing. Surface papers are acid- and lignin-free with a 3% buffering agent to maintain an alkaline pH. The 1/8' thickness allows use with all frame profiles when glazing and mat boards are used, creating a framing package of less then 3/8'. 0
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