C4 A4 Size Board Back Envelopes 324x229mm

C4 A4 size manilla board backed envelopes, 324x229mm. Perfect for sending larger documents/items through the post or via courier without them bending. while keeping postage costs to a minimum. All our board back envelopes have easy to peel 'peel and seel' flaps and are printed with 'Please do not bend' on them. Board-backed envelopes offer more stability than regular ones due to their cardboard back. All our board back envelopes have easy to peel 'peel and seel' flaps and are printed with 'Please do not bend' on them. The front of the envelope is made of durable Kraft paper and the back is made from sturdy duplex cardboard which makes the envelops difficult to fold. Board-backed envelopes are ideally suited for sending items like certificates, contracts and photos.