C6 Graphite Grey Gummed Diamond Flap Greeting Envelopes (Qty 1,000) 114mm x 162mm1 2 day delivery as standard on this product C6 Graphite Grey Gummed Diamond Flap Greeting Envelopes. These pastel green coloured envelopes are made from 100gsm paper and measure 114 x 162mm. Envelope size is C6 which is designed to fit A6 size cards paper. They feature a triangle diamond style flap with gummed closure type. We stock a huge range of other sizes and shades of GREEN ENVELOPES. Measurements displayed are all internal.