Product Code: 113050

Produced with expandable sides to accommodate larger, more bulky items in the post such as documents, catalogues magazines and much more, these 340 x 235 mm gusset envelopes are a great choice for helping your business to avoid the cost of a small parcel in the post.


The Peel and Seal strip allows for easy closure, and the 125 Gsm Manilla gives these envelopes the resilient credentials you are looking for.


The perfect eco friendly alternative to traditional mailing bags. They are manufactured from a lightweight, yet strong, paper. This means they are 100% recyclable too!


Key Features and Benefits


  • 100% Recyclable – Sustainable and Eco Friendly
  • Expandable for larger items
  • Simple peel and seal
  • Made from Manilla for strength, giving reliable mailing security
  • Can be used for Royal Mail or Courier Deliveries
  • Colour:Brown
  • Postal Size:Large Letter
  • Paper Weight:125 GSM
  • Flute:E


You can see the full range of expandable envelopes here and also take a look at our SimplyECO sustainable packaging range.


Sold in packs of 100 – 1 unit = 100 expandable envelopes


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1 or more£69.20 Available




Our expandable envelopes are a convenient and cost-effective way to send goods such as textiles, electronic goods or books in the post.


With pre-creased grooves for easy folding and a self-adhesive strip to create a secure seal, these high quality all board envelopes protect your items from damage. Made from E-flute rigid brown corrugated card, this envelope will not bend or crumple when it comes into contact with other boxes or heavy objects during transit.


The compact design means they are also cost effective compared to using larger boxes and they can easily be addressed without taking up too much space on delivery vehicles.


This particular expandalope is sold in packs of 200. It has dimensions of 250mm x 351mm flat and are pre-creased for a variable capacity of up to 50mm. At maximum capacity of 50mm the internal dimensions are 235mm x 340mm x 35mm*


*Effective size decreases with increasing content thickness


Need something not off the shelf?

Here at Springpack we believe you should give your product the packaging it deserves. In some cases, an off the shelf solution simply won’t do, which is why we offer Bespoke Packaging Products. We work with you to produce bespoke packaging items that are specifically designed to protect your product. From bespoke cardboard boxes for unusual shapes to personalised packaging tape, we’ve got it covered.


Bespoke Packaging - Springpack