Measure before you open the range
Match the document or the slim goods to the M-envelope size.
M-envelope boxes are the Tenvolope flat pack, described as 100% recycled and fully recyclable. The page for M-envelope boxes is where Packaging Boxes shows that line.
The published limit, if there is one
They are a different range from book wraps, which are E-flute with a peel-and-seal strip.
Using a book wrap because the M-envelope size is out changes the pack.
Write the size down
Say M-envelope and the size.
On Packaging Boxes, orders that include M-envelope boxes and are placed by 3pm are dispatched the same day. UK delivery is free on orders over £50 ex VAT. Stocked items can be returned within 14 days.
Open M-envelope boxes when you already know this line. The page shows the pack quantity. Packaging Boxes will still dispatch an order placed by 3pm on the same day.