M Spec Mailers (5 items)

M spec mailers, or cardboard capacity envelopes, are expandable corrugated mailers which pop out into boxes, providing a versatile carrier for goods of all kinds. They are particularly useful for e...

M spec mailers, or cardboard capacity envelopes, are expandable corrugated mailers which pop out into boxes, providing a versatile carrier for goods of all kinds. They are particularly useful for e...

M spec mailers, or cardboard capacity envelopes, are expandable corrugated mailers which pop out into boxes, providing a versatile carrier for goods of all kinds. They are particularly useful for e...

M spec mailers, or cardboard capacity envelopes, are expandable corrugated mailers which pop out into boxes, providing a versatile carrier for goods of all kinds. They are particularly useful for e...

M spec mailers are expandable corrugated mailers which pop out into boxes, providing a versatile carrier for goods of all kinds. These gusseted envelopes can carry items when flat in mailer form or...