C5 Premium White 120gsm Pocket Peel & Seal Envelopes (Qty 500) 162mm x 229mm1 2 day delivery as standard on this product These luxury business envelopes are made from high quality 120gsm paper, with peel & seal closure on the short edge of the envelope pocket style. They feature a blue hatch opaque interior, for confidentiality. Envelope dimensions are 229mm x 162mm, which is "C5 size" to fit A5 papers and documents, or half folded A4. Price is for a box of 500 envelopes. Measurements displayed are all internal.