Is this this biggest envelope in the world? Certainly it’s the biggest we’ve created yet, nor have we heard of anyone else manufacturing printed cardboard envelopes anywhere near this big. It’s bigger than A1 size @ 1.2 x 0.9 metres, the biggest ready-made envelope size that we know of is A2 size!
When we were first approached by this marketing agency, their simple brief was ‘we want the biggest cardboard envelope possible printed in a green colour’. So we quoted an enormous option measuring 3 metres by 2 metres, but the price for that size was too high (or maybe they were worried they might not be able to get the items out without use of a step ladder 🙂 )
So then we quoted a few smaller sizes at smaller prices and found one that was still impressively big but bespoke made to their exact budget. These were used at a promotional event abroad along with some 1.1 x 0.8 metre printed cardboard envelope inserts that we also made for them. 
On receipt of their delivery, our client emailed to report:
“They have arrived and they are fab.”
See more cardboard envelopes