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Manilla board backed envelopes are a classic solution for keeping important documents flat whilst in transit. Combining a rigid 1000 micron backing board and a strong 120gsm paper front with printing, these Do Not Bend envelopes keep postal costs to a minimum, add in-transit instructions to couriers, and are the perfect option for keeping your items in excellent condition before reaching your customer. Available in a range of popular sizes depending on your needs, all of our manilla board backed envelopes are an excellent eco friendly solution as they’re recyclable and biodegradable. Supplied in boxes for easy handling and minimal storage requirements.