Expandable envelope  (142 offers of 6,192,449 product items)

Send bulky items with confidence in these high quality manilla gusset envelopes which provide a combination of good looks and strength. Exceptionally strong 130gsm ribbed manilla paper across the w...

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...

Q-Connect Envelope Gusset 406x305x25mm Peel and Seal 120gsm Manilla (Pack of 100) KF3529

Gusset Pocket P/S White 120GM BX125 229x162x25

5 Star Office white C4 envelopes made from heavyweight 120gsm paper. They feature a window and a 25mm V-base gusset, making these envelopes perfect for sending large items such as catalogues and ce...

Rec Padded Gusset Pocket P/S White 140GM BX100 229x162x50

Extra capacity, ideal for mailing really bulky and awkward shaped mail. Size E4 (406x305mm). Gusset size 50mm. Packed 100.

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...

Rec Padded Gusset Pocket P/S White 140GM BX100 350x250x50

With our comprehensive range of office stationery, you can depend on us to give you exceptional value and reliable performance day after day. This 5 Star Value envelope has a handy peel and seal cl...

Tyvek envelopes are very tough, durable and lightweight. Ideal for sending important documents or heavy or awkward shaped items. Also available in gusset sizes.

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...

Rec Padded Gusset Pocket P/S White 140GM BX100 324x229x50

Gusset Pocket P/S Manilla 140GM BX125 305x250x25

Professionalism, appearance and protection are at the heart of Plus Fabric envelopes, and so is paper quality, which is why we only use environmentally friendly paper that is ethically sourced from...