Acid Free Buffered Perma Dur Archival Corrugated Board

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This strong, smooth, lightweight, pale blue-grey material is the ultimate in corrugated boards. Available in either single wall (approximately 3mm) or double wall (approximately 6mm) thickness. Perma/Dur corrugated board is acid-free, lignin-free and alkaline buffered with 3% calcium carbonate added for an alkaline reserve in all three layers for maximum protection. This exclusive board is made of fully bleached virgin fibres and is unusually strong wherever a sturdy, light board is required. An excellent choice for boxmaking, print backers, picture framing, dividers. pH 8.5.