Mailing boxes that fit AusPost prepaid satchels
Put a box inside an Australia Post prepaid satchel and you get flat-rate satchel postage with the protection of a rigid box. These AusPost boxes are sized to slide into a small, medium, large or extra large prepaid satchel and still seal. Pick your satchel below to see every box that fits it, in white, brown, black and colour, in diecut, tuck front, self-sealing and regular styles.
4 satchel sizessmall to XL
Up to 5kgsatchel weight limit
Box sizesfrom 100mm cubes to A4
White to colourdiecut, tuck & regular
AusPost prepaid satchels drawn to scale, each with a box that fits. Click a satchel to see every box that fits it.
Small satchel 355 x 225e.g. 174 x 128 x 53 boxMedium satchel 390 x 270e.g. 220 x 160 x 77 (A5) boxLarge satchel 405 x 310e.g. 270 x 200 x 95 boxXL satchel 510 x 435e.g. 310 x 230 x 105 (A4) box
Small satchel boxes →355 x 225mm satchel: A6, 174 x 128 x 53mm and boxes up to 240 x 150 x 60mm.Medium satchel boxes →390 x 270mm satchel: 26 box sizes including A5 220 x 160 x 77mm.Large satchel boxes →405 x 310mm satchel: 29 box sizes including 270 x 200 x 95mm.XL satchel boxes →510 x 435mm satchel: 32 box sizes including A4 310 x 230 x 105mm.
Which satchel does my box size need?
| Satchel | Satchel size | Box sizes that fit (smallest satchel) |
|---|---|---|
| Small satchel | 355 x 225mm | 125 x 100 x 75, 150 x 100 x 75, 174 x 128 x 53, 210 x 140 x 60, 240 x 125 x 75, 220 x 145 x 35 (A6), 240 x 150 x 60 |
| Medium satchel | 390 x 270mm | 220 x 160 x 77 (A5), 270 x 200 x 55 |
| Large satchel | 405 x 310mm | 220 x 160 x 100 (A5), 270 x 160 x 120, 250 x 190 x 90, 270 x 200 x 95, 310 x 250 x 50 (A4) |
| XL satchel | 510 x 435mm | 230 x 180 x 130, 310 x 230 x 105 (A4), 310 x 250 x 150 (A4) |
Each box size is listed under the smallest satchel it fits. Box sizes are internal dimensions. Click a size to compare styles and colours.
How to check a box fits a satchel✓ Length + height must be less than the satchel length.✓ Width + height must be less than the satchel width.✓ Try the box on its side if a deep box is close to the limit.✓ Stay under 5kg, including the box.
Pack a satchel order
1Choose the satchel that suits your item and postage.
2Choose the box from that satchel’s collection.
3Protect, slide in and seal with bubble wrap or paper inside the box.
Shop by satchel: Small satchelMedium satchelLarge satchelXL satchelAll boxesDiecut mailersPoly mailersSatchel sizes and prices are set by Australia Post and may change; check auspost.com.au.
Spending $1,000+ a month on packaging? Apply for a wholesale trade account for trade pricing, 30-day terms and a dedicated account manager.
✉ Free samples on request⚑ Pick up Minto NSW / Braeside VIC✈ Free Sydney / Melbourne metro delivery over $500↻ 365-day hassle-free returns⚖ Bulk & wholesale packs
AusPost satchel box FAQs ▾
AusPost satchel box FAQs
What are the AusPost prepaid satchel sizes?
Small 355 x 225mm, medium 390 x 270mm, large 405 x 310mm and extra large 510 x 435mm, each up to 5kg within Australia.
Why put a box inside a satchel?
The satchel gives you flat-rate postage and the box protects fragile items from crushing. It also gives customers a neat unboxing.
Which box fits a medium satchel?
The A5 220 x 160 x 77mm box is the classic fit. See the medium satchel boxes for every option.
Which satchel fits an A4 box?
The A4 310 x 230 x 105mm box needs an XL satchel. The slim 310 x 250 x 50mm A4 box fits a large satchel.
Do you sell AusPost satchels?
No, prepaid satchels are sold by Australia Post. We sell the boxes sized to fit them.
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