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C3 White Board Backed Envelopes are perfect for posting and presenting A3 documents and other items in a professional way. These white envelopes offer a combination of strong back board and tough paper front, which protect your documents while keeping weight and postage costs to a minimum. Our board backed envelopes are printed with “Please Do Not Bend” to encourage careful handling during transit, and help avoid bending or folding of your important items. They feature a handy peel and seal adhesive strip for quick and secure packing.
