Envelopes

50 Large A3 C3 Size Strong Hard Board Backed Envelopes 'Do Not Bend' Peel + Seal - 324 x 457mm / 12.75 x 18" Rigid Postal Packing Mailing Shipping Postage Posting Self Seal Packaging Mailers Strong hard board backed self seal envelopes, rigid / stiff mailers These high quality board backed envelopes are useful for the home or office. Ideal to protect any important documents or items sent through the post. These envelopes come with an... 50 Large A3 C3 Size Strong Hard Board Backed Envelopes 'Do Not Bend' Peel + Seal - 324 x 457mm / 12.75 x 18" Rigid Postal Packing Mailing Shipping Postage Posting Self Seal Packaging Mailers