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Envelopes 1464 Offer(s)
Description The unique fibre structure of Tyvek security envelopes, developed by DuPont, is tear and water resistant for extra security during transit. The envelopes also fea...
Tyvek Pocket C5 Envelope 229 x 162mm Peel and Seal White 100 Pack
Designed to keep transit documents clean and dry, these envelopes are made from waterproof polythene and the peel and seal sealing provides tamper proof security. The envelope's self-adhe...