Extra Strong A3 Size Double Wall Artwork Mailer Stiffeners (439mm x 309mm)

Our C3 / A3 size artwork mailer stiffeners provide additional protection for your A3 size pieces of artwork that need to be transported through the courier networks or the postal system.

Although we are confident that our excellent quality A3 artwork mailers provide superb transit protection for A3 size artwork, these strengtheners are for people that want to add another layer of protection to their items.

Each stiffener weighs approximately 86g