A3 Cello Bags
A3 Cello Bags
Crystal-clear self-seal bags for A3 prints, artwork, posters & documents.
In stockUK fulfilment
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PRODUCT SPECIFICATION
A3 cello bags for prints, artwork & documents
Crystal-clear A3 protective sleeves made from 40 micron OPP, with a self-seal / peel & seal flap for neat presentation. Each bag provides 305 × 425 mm of usable internal space around standard 297 × 420 mm A3 paper and is suited to prints, posters, artwork and documents.
- Best for
- A3 prints, posters, artwork & documents
- Usable internal size
- 305 × 425 mm
- Designed to fit
- 297 × 420 mm A3 paper
- Material
- 40 micron OPP (Oriented Polypropylene)
- Finish
- Crystal clear
- Closure
- Self-seal / peel & seal
- Self-seal flap
- +30 mm outside usable dimensions
- Pack options
- 100 Pack / 200 Pack
- Presentation
- Clean edges · no hang holes
Measure the finished item, including any envelope, mount or backing board. For an easy fit, keep the complete item within the 305 × 425 mm usable area.
Often described as A3 cellophane bags, these clear presentation sleeves are made from oriented polypropylene (OPP), rather than cellulose cellophane.
SIZE & FIT
A3 size & fit
A3 paper measures 297 × 420 mm. These A3 cello bags provide 305 × 425 mm of usable internal space, plus a 30 mm self-seal flap outside the usable area.
Standard A3 paper is 297 × 420 mm, while the usable bag area is 305 × 425 mm — 8 mm wider and 5 mm longer. That gives light handling clearance for an unmounted sheet. If your print has a mount, backing board, envelope or other insert, measure the complete finished item and keep it within the usable dimensions above.
- A3 paper: 297 × 420 mm fits within the usable bag area.
- Mounted work: include the mount or backing board when measuring.
- Flap: the +30 mm self-seal flap sits outside the usable internal dimensions.
A3 CELLO BAG HELP
A3 cello bag FAQs
Answers about A3 fit, usable dimensions, 40 micron OPP, self-seal closure, pack sizes, bulk ordering and UK delivery.
Visit the Help CentreWill A3 paper fit these bags?
Yes. A3 paper measures 297 × 420 mm. These bags provide 305 × 425 mm of usable internal space, plus a 30 mm self-seal flap outside the usable area. Measure thicker mounts, backing boards or inserts before ordering.
What are the usable dimensions of the A3 cello bag?
The usable internal dimensions are 305 × 425 mm. Use these measurements — rather than the external flap size — when checking whether a finished item will fit.
Does the 30 mm self-seal flap count within the usable size?
No. The self-seal flap is additional to the 305 × 425 mm usable internal dimensions.
Are these A3 cello bags the same as A3 cellophane bags?
“Cello bag” and “cellophane bag” are commonly used names for clear presentation bags. These bags are made from 40 micron oriented polypropylene (OPP), rather than cellulose cellophane. Read the material comparison.
Can I use these for A3 prints, posters and artwork?
Yes. The 305 × 425 mm usable internal area is designed around standard A3 paper and works for A3 prints, posters, artwork and documents that fit within those dimensions. Include any mount or backing board when measuring the finished item.
What does 40 micron OPP mean?
40 micron refers to the film thickness: 0.04 mm. OPP means oriented polypropylene, the clear film specification used across the CelloBag range. Learn more about 40 micron OPP.
How does the self-seal / peel & seal closure work?
The flap has an adhesive strip protected by a removable backing. Peel away the backing, fold the flap over and press to seal. No separate tape is needed.
Can I buy 100 or 200 A3 cello bags?
Yes. A3 is available in dedicated 100 Pack and 200 Pack options. Select the pack size at the top of the page before adding to basket.
Can I order 1,000+ A3 cello bags wholesale?
Yes. For orders of 1,000 bags or more, use our Business & Custom enquiry and tell us the volume you need. We’ll confirm the available options and pricing for your requested quantity.
What are the UK delivery options?
Standard UK delivery is £3.49 and normally takes 2–3 business days. Standard delivery is free from £25. Expedited delivery is £6.99 and normally takes 1 business day. View delivery information.
BUSINESS · WHOLESALE
Ordering 1,000+ A3 cello bags?
For larger trade or repeat orders, tell us the quantity you need and how often you order. We’ll confirm the available business options and pricing for your requirement.