Description
Are you looking for A3 rigid envelope of Maximum protection? This full black corrugated rigid envelope is our new benchmark. The envelopes are made of reinforced corrugated cardboard. They are sturdier and lighter than the conventional 700gsm mailers. The matte black finish makes your parcel standout and special.
- Envelope Size: 330 x 450mm, Designed for Mailing A3 Document
- Made of Premium Quality Corrugated Board
- Full Black, Plain, no printing or marks on the envelope.
- Double folded corners improve the strength and rigidity agaist bend and tear.
- Very Sticky Glue eliminates the need for staples and tape to secure package.
- High Quality with 90 Days Money Back Guarantee
- eBPak Signature Product, Unmatched Quality at Everyday Low Price.
- 100% Recycable Product, suitable for kerbside waste collection
- Slide documents, prints or photos in flat. A sheet of card on each side adds extra protection.
- Peel the liner off the glue strip and press the flap down firmly.
- Write "Please do not bend" on the front for prints and photos.
- Stick your shipping label on the flat front, away from the flap.
- Free delivery to Sydney & Melbourne metro on orders over $500.
- $50 flat rate to Wollongong areas and $75 to Gosford & Newcastle areas (up to 2 tonne).
- Australia-wide delivery via Australia Post and trusted couriers.
- Free pickup from Minto NSW or Braeside VIC, Mon–Fri 9am–4pm.
- 90-day returns on unopened items. See our refund policy.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Sizing
What fits in this envelope
Inside: 330 x 450mm
- Suits A3 posters, prints and artwork kept flat
- A3 sheets and books fit flat
- Allow 10–20mm on the width and length for the thickness of your item
Not sure? Use the size guide below or call us on (02) 8750 5347.
Rigid mailer size guide
Our most popular rigid mailer sizes, smallest to largest.
| Size | Inside (mm) | Good for | Link |
|---|---|---|---|
| DL | 120 x 228 | Vouchers, tickets, DL documents | View → |
| C5 | 152 x 227 | A5 documents, cards, photos | View → |
| A5 | 170 x 230 | A5 prints and photos | View → |
| C4 | 214 x 312 | A4 documents, fits AusPost Large prepaid | View → |
| A4 | 240 x 330 | A4 certificates and prints | View → |
| A3 | 330 x 450 | A3 prints and posters | View → |
| A2 | 450 x 630 | A2 prints and artwork | View → |
More rigid mailers
Packing essentials
Questions about this envelope
Will a rigid mailer stop my item bending?
Yes. Rigid mailers are made from stiff board (700gsm card or corrugated eFlute), so prints, photos and documents arrive flat. For extra care, write "Please do not bend" on the front.
Will it fit an Australia Post prepaid envelope?
Our DL, C5 and C4 rigid mailers are sized to go inside the matching Australia Post prepaid envelopes. It's in the product title when a mailer is made to fit.
How do I seal it?
Peel the liner off the glue strip and press the flap down firmly.
What's the difference between rigid mailers and card envelopes?
Rigid mailers are made to resist bending. Card envelopes (tough bags) are strong 250–300gsm card that protects documents and catalogues but can flex a little.
What does the pack size mean?
The pack size is how many envelopes come in one pack, for example 100 is a pack of 100 envelopes. "Number of packs" sets how many packs you get, so a pack of 100 with 2 packs is 200 envelopes.
Can I return the envelopes, or pick up my order?
Yes to both. We offer 90-day returns on unopened items (see our refund policy), and you can choose pickup at checkout and collect from Minto NSW or Braeside VIC, Monday to Friday 9am to 4pm.
Need it today? Pick it up.
Order online and we'll usually have it ready in 15–30 minutes at either warehouse.