C6 board backed envelopes are 115gsm heavy-duty manilla envelopes with hot melt glue on all seams, and finger lift silicon paper strips. Perfect for posting by adding that extra protection of a 550gsm Grey Board Back. These board back C6 envelopes are perfect for adding extra protection to their contents and will fit A6 sized documents. 'Please do not bend' is printed in red on the front of these C6 board envelopes.
Size: 114 x 162 mm
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