Board-back stock is the flat post. If that slot is empty, certificates get folded. This page stays with board-back envelopes, next to void fill beside the mailers.
Packaging Suppliers keeps Board-back envelopes apart from a folded mailer. Board-back envelopes are a separate list from plain envelopes and from mailing bags.
What this collects
A board-back envelope keeps a document flat.
void fill beside the mailers is the neighbour on this list. Void fill belongs beside a carton, not inside a mailer that should have been a closer bag. It is still a different range from board-back envelopes.
Before the order goes in
Pick the envelope from the document size, not from the nearest mailer.
On Packaging Suppliers, put Board-back envelopes on the order with the lines it belongs to, so you are not paying a second delivery for the piece you forgot. Free UK delivery starts over £50 ex VAT.