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These C3 Manilla Board Envelopes are ideal for sending A3 documents safely. Our manilla board envelopes offer a high level of protection for your important items as they are constructed from a combination of strong 1000 micron back board and 120gsm manilla paper front, which protect your documents while keeping postage costs low. These manilla board envelopes feature a peel and seal strip for quick and simple packing and are printed with “Please Do Not Bend” to help avoid your important items being bent or folded in transit.
