Tufpac 278mm x 400mm Capacity Cardboard Envelope (Box of 100)

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Recyclable oversize solid board cardboard envelope mailer for sending small online orders and larger books. These biodegradable & compostable book envelopes are made from stiff cardboard with a very high recycled fibre content, a great eco-conscious choice.

£ 51.17 51.17 GBP £ 51.17

£ 51.17

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Product Type: Cardboard Mailer

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278mm x 400mm Capacity Book Mailer Envelope

A 278mm x 400mm size capacity book mailer envelope for packing larger size books, prints, and other similar items. Our capacity envelopes are manufactured from 400gsm solid wall cardboard for a premium grade mailer that is just 2mm thick. This thin but strong mailer allows you to save on postage costs and protect your products better. Solid board capacity mailers are a great alternative to bubble lined mailers, they offer greater rigidity, higher corner impact protection, and are fully recyclable and compostable. 

Capacity Book Mailer Envelope Key Features

 - Rigid and durable 400gsm solid wall cardboard.

 - Capacity creases give a capacity up to 50mm thick.

 - An eco-friendly mailer made from recycled material - fully recyclable, and biodegradable.

 - Quick and easy peel & seal closure for super fast packing.

 - Frustration free easy-tear opening for happy customers.


Bulk Buy Pricing on 287 x 400mm Capacity Envelopes

287 x 400mm capacity envelopes are available to buy in bulk pallet quantities for those looking for wholesale rates. We supply many of these throughout the UK so are a very competitive source for large quantities.


Box of 100Pallet of 4500Multiple Pallets
51.2p each33p eachCall our team for prices


278 x 400mm Capacity Envelope Specifications


Product Code: TPSBE30


Internal Dimensions:

Length: 400mm*

Width: 278mm*

Depth: up to 40mm

*Length and width will decrease as depth increases


Material: Solid Board 400gsm

Weight of Mailer: 103g (0.103 kg)

Finish: Brown


Quantity per Pack: 100

Quantity per Pallet: 4'500 (45 packs)


Royal Mail Postal Size: Small Parcel


Easy Open Tear Strip: Yes

Self Seal Strip: Yes


Eco Packaging Score: 3/5

 - Recyclable: Yes

 - Biodegradable: Yes

 - Sustainable Materials: Yes

 - Plastic Free: No

 - Carbon Neutral: No

People who purchased this item found it by searching for: TPSBE30, large book mailers, Solid Board Envelopes, Mail Jacket Size 3, Amazon Style Mailers Size 3, Print Mailers, MailJacket Size 3, 278 x 400mm, MJ3, Capacity Envelope Mailers, Lil A4