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Manilla Cardboard Envelopes are an essential throughout thousands of offices - specifically designed to keep your products and documents flat and well protected when you need it most. We stock a range of popular sizes of manilla board envelopes both with and without ‘Please Do Not Bend’ printing depending on your needs, all are manufactured from a thick paper front to keep postal costs low and a 1000-micron board backing to keep your items flat whilst in the post. All of our manilla cardboard envelopes include a peel and seal adhesive strip for fast packing and a reliable seal, and all can easily be recycled and biodegraded after use. Supplied in boxes for neat storage and easy handling.