£20.99

750 Micron A3 Greyboard Backing Board

Twice the Size of A4, Just as Reliable.

This A3 greyboard is made from 100% recycled fibre and comes in at 750 micron (0.75mm) thick—lightweight but solid enough to back, mount, support, or reinforce your prints, posters or packaging projects. At 297mm x 420mm, it gives you plenty of space without the bulk.

It’s uncoated and easy to cut, glue or score, making it perfect for folders, inserts, art projects, and flat-packed creativity. As always, VAT and UK delivery are included—no awkward add-ons at checkout.

Why Choose Our A3 750 Micron Greyboard?

• 750 micron (0.75mm) – flexible but firm
• Cut to A3 size: 297mm x 420mm
• Made from 100% recycled greyboard
• Uncoated surface – glue it, score it, draw on it
• Ideal for lightweight mounting, dividers, craft and packaging
• VAT and UK delivery included

Need a Custom Cut?

We can trim greyboard to just about any size. Get in touch with your dimensions and we’ll sort it for you.

Earn While You Stock Up

Create a free Mankey Monkey account and earn loyalty points with every order. Use them to save on your next batch.

Looking for Different Specs?

• Need more thickness? Try 1000 micron A3
• Want smaller? Go with A4 750 micron
• Browse the full greyboard range

Specs at a Glance

• Material: 100% recycled greyboard
• Finish: Uncoated
• Thickness: 750 micron (0.75mm)
• Size: A3 (297mm x 420mm)
• Available in multiple pack sizes
• Includes VAT and UK delivery

Frequently Asked Questions

What is 750 micron good for?

It’s ideal for lightweight packaging, print backing, dividers, or adding structure to art and craft projects.

Can I cut it easily?

Yes – a craft knife and straight edge will get the job done. It’s firm but not difficult to trim.

Is A3 double the size of A4?

Exactly. A3 measures 297mm x 420mm—double the surface area of A4, perfect for larger designs.

Do you offer small packs for testing?

We do. Grab a trial quantity first if you want to see how it feels before going big.

Can I get custom sizes?

Yes – send us your measurements and we’ll let you know what’s possible.