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Foamboard
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Special Papers, Paper for bookbinding
Foam Core Board - Canada
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Clairefontaine Pastelmat Card - 19-1/2 x 27-1/2, Light Gray, 1 Sheet
Foam Core Board - Canada
Foam Board 20 x 30 x 3/16 (5mm) - 12 Pack - White
The insertion depth for HALBE magnetic frames explained simply