When you have larger items to post then our 16" x 12" envelopes are the prefect choice. These envelopes will give those documents a bit more space and reduce the risk of the envelope splitting whilst in transit.
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16 X 12 Non-Window Pocket Self Seal Envelopes Manilla 115gsmPRODUCT CODE 13896£36.99 ex. VATPACK OF 250