Top quality, traditional self-seal 80 and 90gsm manila paper envelopes from leading UK manufacturers, available in convenient and easy to store packs of 25. Envelope sizes are C5 (160 x 230mm) for A5 unfolded or once folded A4 paper and C4 (325 x 230mm) for unfolded A4 paper. Suitable for business and commercial use in offices, warehouses, shops and other environments. Also available in plain white or white with clear windows. Brand may vary to maintain continuity of supply.