Smooth white All Board Envelopes, with dimensions 222mm x 273mm and produced using premium grade 500 micron, 350gsm, GD2 fully coated chipboard. With their pre-folded closure and peel and seal strip, they are easy and fast to seal securely. Board envelopes are the perfect solution for keeping paper, card and slim items protected during the despatch process. Self-adhesive labels bond well to the coated surface or you can choose to print directly on to it.