Description
Strong C4 Board Backed Envelopes for A4 Documents
Our C4 board backed envelopes provide strong, rigid protection for A4 documents sent through the post. Measuring approximately 324mm x 229mm, they are designed to hold standard A4 sheets flat, without folding.
Made using a tough 1000 micron board backing and 120gsm paper, these heavy-duty envelopes help protect documents from bending, creasing and damage while in transit.
They are ideal for businesses, offices, schools, solicitors, accountants, photographers, artists and anyone sending important A4 documents through the post.
Heavy Duty A4 Board Backed Envelopes
Unlike an ordinary paper envelope, a board backed envelope has a rigid card backing that helps keep its contents flat.
These C4 envelopes are particularly suitable for sending:
- certificates and qualifications
- contracts and legal documents
- photographs and prints
- artwork and illustrations
- reports and presentations
- brochures and catalogues
- important business documents
For particularly delicate items, additional cardboard envelope stiffeners can also be added for even greater rigidity.
C4 Board Backed Envelope Specification
- Envelope size: C4 / A4
- Dimensions: approximately 324mm x 229mm
- Board backing: 1000 micron
- Paper: 120gsm
- Approximate envelope weight: 54g
- Closure: Peel & seal
- Royal Mail format: Large Letter
The C4 format allows standard A4 sheets to be posted unfolded, helping documents arrive looking neat and professional.
C4 Board Backed Envelopes for Large Letter Post
At approximately 324mm x 229mm, these envelopes are designed for posting A4 documents while remaining within the dimensions commonly associated with Royal Mail’s Large Letter format.
Always check the finished weight and thickness of your packed envelope against Royal Mail’s current size and weight limits before posting.
If keeping the total postal weight as low as possible is particularly important, take a look at our lightweight and Tariff Beater C4 board backed envelopes.
Why Choose Defenda C4 Board Backed Envelopes?
Defenda Packaging specialises in protective postal packaging for businesses throughout the UK.
Our C4 board backed envelopes are designed to provide a strong balance between rigidity, protection and postal weight. The heavy board backing helps protect valuable documents, while the peel-and-seal closure makes them quick and easy to prepare for dispatch.
Available in quantities from 125 envelopes upwards, with competitive pricing for larger orders.
Choose your required quantity above to see current prices and order online.
