Custom Full Colour Printed Solid Board Cardboard Envelopes & Mailers - 278mm x 400mm
Custom Full Colour Printed Solid Board Cardboard Envelopes & Mailers - 278mm x 400mm
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£102.96 inc. VAT each
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Product Information
Product Information
Customised durable standard solid board cardboard envelopes & cardboard mailer wallet (278mm x 400mm) with a strong adhesive closure personalised with your own design, logo or text.
Create and print your very own customised standard cardboard mailer wallet / gusseted envelope. Either instantly upload your own design, text or logo using our simple to use tool or email us your artwork and requirements and we'll do it for you (small artwork setting fee may apply).
Our high quality FULL COLOUR double sided cardboard envelope printing service is the first of its kind in the UK. Not only will you be happy with our superior print quality and fast next day delivery (subject to availability) but you'll also have total peace of mind using our unique LIVE VIDEO approval and printing process.
Our Capacity Book Mailer Wallet Envelopes (278mm x 400mm) are gusseted to offer the flexibility of a Small Postal Box when goods are inserted. Suitable for books, magazines, DVD's CD's, Blu-ray disks, gaming disks, diaries, hard backed books and other similar sized items. Our solid board cardboard mailer envelopes are rigid to offer protection of goods whilst in transit.
Low Minimum Order Quantities Guaranteed
Our printing systems use an 'on demand' instant digital full colour print system. As such, this allows us to offer some of the lowest minimum order print quantities available in the UK.
Quick UK Delivery & Guaranteed No Customs Charges
All of our custom print products are printed in our UK based warehouse. This enables us to deliver faster than any other packaging printing company in the UK. More importantly, as we’re based in the UK, unlike a lot of other companies offering a similar service, we can guarantee you will avoid any potential CUSTOMS SURCHARGES to any mainland UK delivery address.
Royal Mail Pricing in Proportion Size Category (PiP Size)
These cardboard envelopes & mailers can make full use of using Royal Mail’s size based pricing / Pricing in Proportion index. These cardboard envelopes fall into either their 'Large Letter' or 'Small Parcel' categories depending on the thickness of the contents. Maximum thickness to qualify for Large Letter pricing would be 25mm (including the cardboard mailer which would be a total of approximately 6mm allowing approx. 19mm for the contents).
Product Features of our Standard Solid Board Cardboard Envelopes & Mailers - 278mm x 400mm
- Full Colour Double Sided Printing.
- Envelope-like Mailer manufactured from 100% recycled and recyclable material.
- Closure - All cardboard envelopes have a peel and seal strip, for easy and secure closure.
- Strength - Standard solid board with 400gsm solid board. Designed for light to medium duty.
Product Details
- Scored for increased capacity – up to 40mm.
- Colour - Brown / Manila.
- Flat Dimensions (W x L) - 278x400mm / 27.8x40cm.
- Load Dimensions (W x L x H) - 238x360x40mm / 23.8x36x4cm.
- PiP Size When Flat - Small Parcel.
- PiP Size When Expanded - Small Parcel.
- For size guidance only this would replace the Kite Packaging code - CSB238X40X360.
- Parcelsend UK SKU - SB-CE278, MCP-SB-CE278-PSUK & MCP-SB-CE278.
DISCLAIMER: Remember, we are printing your artwork or logo onto a pre-manufactured product on an uneven surface in full colour which is an extremely difficult and challenging process. Whilst every care will be taken to give you the best results, there may be some slight imperfections or very slight colour variances. This would be more prominent if printing on brown or manila materials. Also, for best results please avoid large areas of block colour as this can give inconsistent print quality. If you're unsure, we suggest you order a single printed sample which should be used as a guide, as no refunds will be given for personalised products with slight imperfections or colour variances and incorrect sized products. Please note, we cannot guarantee to meet exact specific colour pantones. Finally, we reserve the right to request customers to amend artwork / creative and / or cancel and refund your order if we feel that we cannot guarantee a consistent acceptable level of quality.
Due to manufacturer tolerances, actual item dimensions may vary by 10–20mm. If precise sizing is important for your project, we strongly recommend requesting a sample before placing your order.
Low Minimum Order Quantities
Low Minimum Order Quantities
Because we use an on-demand, instant digital full-colour print system, we’re able to offer some of the lowest minimum order quantities in the UK - perfect for small runs or custom projects.
Please note: a one-time low-volume set-up fee of £49.95 applies to any order under £100. This is added automatically at checkout, but it won’t apply to repeat orders of the same product as long as the artwork remains unchanged.
Fast UK Delivery
Fast UK Delivery
All of our products are manufactured and dispatched right here in our own UK warehouse, which means we can offer some of the fastest turnaround times in the country. And because everything is produced in the UK (unlike many other providers), you’ll never have to worry about customs delays or surprise charges. Delivery is calculated at checkout based on order value - free over £70. All orders are shipped flat-packed for maximum efficiency.
RISK FREE Guarantee
RISK FREE Guarantee
100% Risk-Free Satisfaction Guarantee - We want you to feel totally confident when ordering with us. Before full production starts, you’ll get a proof (by app or email) and can make as many changes as you need until you’re completely happy. If you’d like to check our quality first, you can order a sample directly from the product page. Proofs aren’t provided with samples since they’re just for testing print and quality, but when you place your full order, you’ll be able to make amendments then. The cost of your sample will be refunded against your first full order*, and if you’re not happy with the quality, we’ll refund you in full.
*Sample refunds can’t be combined with other discounts or promotions.
Product Reviews
Product Reviews
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Frequently Asked Questions
What size are the solid board cardboard envelopes?
These cardboard envelopes measure 278mm x 400mm flat and expand to 238mm x 360mm x 40mm once filled, as they're scored to give up to 40mm of capacity.
Can these qualify for Royal Mail Large Letter pricing?
The envelope itself is around 6mm thick, so with contents up to approximately 19mm you can stay within the 25mm maximum thickness for Large Letter pricing; thicker parcels fall into the Small Parcel category instead.
What items are these envelopes suitable for?
They're gusseted to work like a small postal box and suit books, magazines, DVDs, CDs, Blu-ray discs, gaming discs, diaries and other hardback or similarly sized items.
What are the envelopes made from and how do they close?
They're made from 400gsm solid board designed for light to medium duty use, with a peel and seal strip for a quick, secure closure.
How do I check my artwork before the order is printed?
Upload your design online and approve it via our live video approval process before full production starts, giving you full confidence in the finished print.
What quantities are available and how long will printing take?
You can order printed packs of 100, 200, 300, 400, 600, 800 or 1000, or a single printed sample, and as these are made to order please allow roughly 72 hours for production.
Why Choose Us
Free UK Delivery Available
Choose from a few delivery options including FREE delivery to mainland UK on orders over £70.
Trusted Supplier
Over 20 years’ experience in the postal industry under Mailcoms Ltd.
UK Based
All products are printed and made in the heart of England, keeping our carbon footprint as low as possible.

