iSOUL Rigid Cardboard Envelopes 164 x 178mm 400gsm Card - Peel and Seal - Rip and Strip Open - Capacity Book Mailers/Card Mailers for Royal Mail Large Letter Posting (50) : Amazon.co.uk:
Rigid Cardboard Envelopes - box of 100. Available in a range of sizes!
A3 A4 A5 Large Letter Square Cardboard Book Envelopes Strong Rigid Expanding | Packaging Shack
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