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Expandable / Capacity Envelope C4 ( 233x333mm ) 50/Pack

£ 15.44
Availability : In Stock

The C4 expandable envelope adjusts to your needs. For flat packing insert items and peel off the closure strip and seal the envelope. To expand the envelope push in both sides and the bottom of the envelope until you begin to see a box shape forming, The two bottom corners of the envelope will stick out into points Fold the points into the bottom of the envelope. Insert your items and seal the envelope with the closure strip.


Used for mailing books and media and is particularly good for flat products.  All our  products feature a 'peel and seal' lid flap for speedy sealing and have additional bulking bends to accommodate thicker items. We also use a pressure sensitive hot-melt for superior adhesion to give you the peace of mind that your items will arrive in the same excellent condition as when you posted them.


  • Made from 100% recycled material
  • Hassle free recycling
  • Efficient solution to PiP boxes
  • Biodegradable and compostable once glue strip is removed.
  • The C4 expandable envelope is perfect for paperwork, and medium package items such as t-shirts and other items.
  • The envelope comes with an easy-peel & seal closure strip making packaging quick and efficient for the sender and an easy tear open strip for the receiver.
  • Rigid design also offers more protection than the standard mailer.
MaterialCorrugated cardboard,
Material Composition: 100% Recycled Kraft Paper
Recommended Storage Temperature13-21°C (55.4°F – 69.8°F) for optimum performance.
Recyclable?Yes (With glue strip removed)
Royal Mail CompatibilityLarge letter & Small parcel
Package information50 Units / Pack , 300 Units = 1 Box
Envelope Size (Internal - Flat)233(W)x333(L)
Envelope Size (Internal - Expanded)213(W)x293(L)x40(D)+55(Lip)mm


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