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Description
Our B391 brown kraft tuck front mailing box measures 430 x 310 x 140mm internally, sized for A3 items. Its self-locking tuck front folds closed neatly, and the double-walled sides and front flap add rigidity in transit, making it a practical mailer box for everyday online orders.
Key Features
- Brown tuck front mailing box: Kraft brown corrugated board for a clean, simple look on everyday orders.
- Self-locking tuck front: Folds into shape and tucks closed to form a secure, neat mailer box.
- Double-walled sides and front flap: The tuck front construction folds the side walls and front flap double for extra rigidity and crush resistance.
- Internal size 430 x 310 x 140mm (A3): Measured inside the box, suited to A3 prints and documents, apparel bundles, larger gift sets and hampers.
- 100% recyclable and FSC certified: Made from 100% recyclable corrugated board from FSC-certified sources, so it can go straight into paper recycling.
- 90-day money-back guarantee: Backed by the eBPak 90-day money-back guarantee.
Specifications
| Product code | B391 |
|---|---|
| Internal dimensions (L x W x H) | 430 x 310 x 140mm |
| Paper size fit | A3 |
| Box style | Tuck front, self-locking |
| Colour | Brown kraft |
| Board | D-flute corrugated board |
| Construction | Double-walled sides and front flap |
| Recyclable | 100% recyclable |
| Certification | FSC certified |
| Pack size | 25 boxes |
| Guarantee | 90-day money-back guarantee |
Ideal For
- Everyday e-commerce orders
- A3 prints, posters and documents
- Apparel bundles and larger hampers
- Small-business and online-store shipping
- Retail and wholesale dispatch
Browse the full range of Brown Tuck Front Mailing Boxes.
- Lay the flat box printed side down and fold up the two long side walls.
- Fold the dust flaps in and fold the double side walls over them so they lock in place.
- Pack your items. Add tissue paper or shredded paper for a gift-style unboxing.
- Close the lid and tuck the front flap into the front of the box.
- Self-seal styles have an adhesive strip on the flap. On other styles, add a strip of tape or a branded sticker for heavier items or extra security.
- 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 box
Inside: 430 x 310 x 140mm (length x width x height)
- A3 paper and folders lie flat, so A4 fits too
- About 18.7 litres of space inside
- Delivered flat, folds into shape in seconds
- Sizes are inside measurements. Allow 5–10mm each side for tissue paper or bubble wrap.
- Not sure? Use the size finder below or call us on (02) 8750 5347.
More tuck-front mailing boxes
Size finder
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Enter your item's measurements on the left, then press Search to see every size we stock that fits.
Nothing in stock fits that size.
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Packing essentials
Save $10.13
Clear Pallet Wrap 500mm x 285m Hand Stretch Film 25U x4 Rolls
Sale price$62.37
Regular price$72.50
$15.59 each
Wholesale · Bulk packs
Buying in bulk? Pay less per box.
Order 1,000+ mailing boxes, or Australian-made shipping cartons by the pallet, and we'll quote a wholesale price. Trade accounts get invoice terms and a dedicated contact.
Questions about this box
What fits in a 430 x 305 x 140mm box?
A3 prints, folders and books lie flat (A3 is 420 x 297mm), with 140mm of height for clothing, hampers, gift sets and larger bundles.
Is the size inside or outside the box?
All sizes are internal (length x width x height), measured inside the box. The outside is a few millimetres bigger because of the board thickness.
What does "Full" or "Premium" colour mean?
"Full" colour boxes (for example Full Black or Full Rose Pink) are printed the same colour inside and out, so the box looks finished the moment it's opened. Most other coloured boxes are coloured outside with a natural kraft inside.
How do I assemble and close a tuck-front box?
Fold up the sides, lock the double side walls over the dust flaps, pack your items, then close the lid and tuck the front flap into the front of the box. For heavier items, add a strip of tape or a branded sticker.
Are the boxes delivered flat?
Yes. The boxes are delivered flat in packs and fold into shape in seconds, so they take up very little shelf space.
Can I print my logo on the box?
Yes. We make custom printed boxes from 1,000 units, usually in around 2 weeks. Get a quote. For smaller runs, a printed sticker or stamp on a plain box works well.
What does the pack size mean?
The pack size is how many boxes come in one pack, for example x100 is a pack of 100 boxes. "Number of packs" sets how many packs you get, so x100 with 2 packs is 200 boxes.
Can I return the boxes, 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.
NSW
Sydney — Minto
Unit 2, 1 Swaffham Road, Minto NSW 2566
Mon–Fri 9am–4pm · Sat–Sun closed
Get directions
VIC
Melbourne — Braeside
21–23 Endeavour Way, Braeside VIC 3195
Mon–Fri 9am–4pm · Sat–Sun closed
Get directions
Talk to our team
Call us on (02) 8750 5347
Fast delivery Australia-wide
Via Australia Post and trusted couriers
Pickup in Sydney & Melbourne
Minto NSW and Braeside VIC
90-Day Returns
On unopened items