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Spirax No. 595 A4 Notebook 120 Pages product photo

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2024 HM King Charles III AlBr CuNi Uncirculated Six Coin Year Set product photo

2024 HM King Charles III AlBr CuNi Uncirculated Six Coin Year Set

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Spirax No. 595 A4 Notebook 120 Pages product photo

Spirax No. 595 A4 Notebook 120 Pages

2024 HM King Charles III AlBr CuNi Uncirculated Six Coin Year Set product photo

2024 HM King Charles III AlBr CuNi Uncirculated Six Coin Year Set

HP 67 Black Ink Cartridge product photo

HP 67 Black Ink Cartridge

Express Post Prepaid Envelope Medium (C5) – 10 Pack product photo

Express Post Prepaid Envelope Medium

View more 'Popular Products'

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Recent searches

Trending Searches

Stamps
Express Post
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Popular Products

Spirax No. 595 A4 Notebook 120 Pages product photo

Spirax No. 595 A4 Notebook 120 Pages

2024 HM King Charles III AlBr CuNi Uncirculated Six Coin Year Set product photo

2024 HM King Charles III AlBr CuNi Uncirculated Six Coin Year Set

HP 67 Black Ink Cartridge product photo

HP 67 Black Ink Cartridge

Express Post Prepaid Envelope Medium (C5) – 10 Pack product photo

Express Post Prepaid Envelope Medium

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View all collectables, and shop by year, theme, brand, coin denomination and more. Australia Post is your home of collectables.

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Australia Post(55)

Royal Mint (UK)(6)

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Australia(21)

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Dahlias Australian Cultivars(10)

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In Stock(42)

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Prepaid Postcard – Perth Skyline, WA product photo

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Prepaid Postcard – Perth Skyline, WA

$2.55

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Happy Birthday 2026 Stamp & Coin in Card product photo

Happy Birthday 2026 Stamp & Coin in Card

$27.00

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2026 $2 'C' Mintmark Coloured Uncirculated Coin � Dawn Service product photo

2026 $2 'C' Mintmark Coloured Uncirculated Coin � Dawn Service

$15.00

Limit of 9999

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My Little Pony Stamp Pack product photo

My Little Pony Stamp Pack

$19.00

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Happy Birthday 2026 PNC product photo

Happy Birthday 2026 PNC

$27.00

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Dahlias Australian Cultivars First Day Cover (Gummed) product photo

Dahlias Australian Cultivars First Day Cover (Gummed)

$6.10

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Dahlias Australian Cultivars Stamps (3 x $1.70) product photo

Dahlias Australian Cultivars Stamps (3 x $1.70)

$5.10

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Dahlias Australian Cultivars Stamp Pack product photo

Dahlias Australian Cultivars Stamp Pack

$10.65

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Dahlias Australian Cultivars First Day Cover (Minisheet) product photo

Dahlias Australian Cultivars First Day Cover (Minisheet)

$6.10

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Dahlias Australian Cultivars Gutter Strip – 10 x $1.70 Wangolina Semillon product photo

Dahlias Australian Cultivars Gutter Strip – 10 x $1.70 Wangolina Semillon

$17.00

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Dahlias Australian Cultivars Minisheet product photo

Dahlias Australian Cultivars Minisheet

$5.10

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Dahlias Australian Cultivars Medallion Cover product photo

Dahlias Australian Cultivars Medallion Cover

$35.00

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Dahlias Australian Cultivars Gutter Strip – 10 x $1.70 Bracken Palomina product photo

Dahlias Australian Cultivars Gutter Strip – 10 x $1.70 Bracken Palomina

$17.00

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Dahlias Australian Cultivars Maxicard (Set of 3) product photo

Dahlias Australian Cultivars Maxicard (Set of 3)

$9.30

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Dahlias Australian Cultivars Gutter Strip – 10 x $1.70 Nayap product photo

Dahlias Australian Cultivars Gutter Strip – 10 x $1.70 Nayap

$17.00

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2026 $2 'C' Mintmark Coloured Silver Proof Coin – Dawn Service product photo

2026 $2 'C' Mintmark Coloured Silver Proof Coin – Dawn Service

$90.00

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2026 50c CuNi Uncirculated Coin – 75th Anniversary of the Battle of Kapyong product photo

2026 50c CuNi Uncirculated Coin – 75th Anniversary of the Battle of Kapyong

$20.00

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2026 Six-Coin Silver Proof Year Set – 60th Anniversary of Decimal Currency product photo

2026 Six-Coin Silver Proof Year Set – 60th Anniversary of Decimal Currency

$415.00

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91 Years of Monopoly 50p Silver Proof Coin product photo

91 Years of Monopoly 50p Silver Proof Coin

$185.00

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90 Years of Monopoly 50p Uncirculated Coin product photo

90 Years of Monopoly 50p Uncirculated Coin

$36.00

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Freddie Mercury UK 5P Brilliant Uncircualted Coin product photo

Freddie Mercury UK 5P Brilliant Uncircualted Coin

$45.00

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Portraits of Queen Elizabeth II - 5 Pound 1oz Silver Proof Coin product photo

Portraits of Queen Elizabeth II - 5 Pound 1oz Silver Proof Coin

$270.00

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Freddie Mercury UK 1oz Silver Proof Coin product photo

Freddie Mercury UK 1oz Silver Proof Coin

$285.00

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Portraits of Queen Elizabeth II - 5 Pound Brilliant Uncircualted Coin product photo

Portraits of Queen Elizabeth II - 5 Pound Brilliant Uncircualted Coin

$45.00

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Disney Villians Stamp Pack product photo

Disney Villians Stamp Pack

$19.00

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Creatures of the Palaeozoic Medallion Cover product photo

Creatures of the Palaeozoic Medallion Cover

$35.00

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Creatures of the Palaeozoic Stamps (4 x $1.70) product photo

Creatures of the Palaeozoic Stamps (4 x $1.70)

$6.80

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Creatures of the Palaeozoic Gutter Strip 10 x $1.70 - Nesonektris Aldridgei product photo

Creatures of the Palaeozoic Gutter Strip 10 x $1.70 - Nesonektris Aldridgei

$17.00

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Creatures of the Palaeozoic Minisheet product photo

Creatures of the Palaeozoic Minisheet

$6.80

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Creatures of the Palaeozoic First Day Cover (Minisheet) product photo

Creatures of the Palaeozoic First Day Cover (Minisheet)

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Size guide

Envelopes

Envelopes

Envelopes are DL to B4 in size.

Envelope sizes

Dimensions (L x H)

What can it fit?

SmallS

DL/DLW

220 x 110mm

A4 documents folded into thirds

MediumM

C5

229 x 162mm

A4 documents folded in half

DL Max/DLX

235 x 120mm

LargeL

C4

324 x 229mm

Some unfolded A4 documents or

B4

353 x 250mm

A4-sized magazine or booklet

Keep in mind the size and weight of your envelope affects how much it costs to send.

Satchels, bags and mailers

Satchels, bags and mailers

Generally, sizes like ‘0’ are extra small. The higher the number, the larger the packaging.

satchel-bag

We’ve grouped all satchels, bags and mailers into easy-to understand sizes.

You might have noticed different product codes and names – we’ve listed them below – plus suggestions on what might fit in each size, tips on how to measure and postage.

Extra small

Dimensions

W: 160 – 229mm

L: 100 – 170mm

What can they fit?

USB drive, pair of socks, watch (loose), makeup palette

Product name codes

PM0, PM1, Size 000, Size 00, Size 1

Shop extra small

Small

Dimensions

W: 260 – 370mm

L: 190 – 261mm

What can they fit?

DVD in case, shirt (folded), book, pet toys

Product name codes

Small, ‘Enviro’ Size 1, PM2, Size 2, Size 4, TB1, TB2

Medium

Dimensions

W: 375 – 390mm

L: 260 – 385mm

What can they fit?

Jacket or jumper (folded), container of supplements, plush toy

Product name codes

Medium, ‘Enviro’ Size 3, Size 5

Large

Dimensions

W: 390 – 483mm

L: 285 – 405mm

What can they fit?

Cushion, sheet set (folded)

Product name codes

Large, ’Enviro’ Size 4, Size 6, Size 7

Extra large

Dimensions

W: 505 – 700mm

L: 400 – 600mm

What can they fit?

Backpack (flat), blanket or doona (folded), duffle bag

Product name codes

Extra Large, ’Enviro’ Size 5, ’Enviro’ Size 6, Size 12

Shop extra large

How to measure

Measure your item’s maximum points and compare it with the packaging dimensions. Satchels, bags and mailers expand when filled.

Laying your item on a flat satchel is a good guide, but head in store if you’re unsure.

Measurement banner

Postage

Size and weight become important when you use packaging to post with us.

Sending 5kg or under in Australia using flat rate packaging? It’s eligible for flat rate postage.
Sending 5kg or under in Australia using other packaging? Follow flat rate postage, based on weight.
Sending over 5kg, or overseas? Postage costs will depend on the destination, delivery speed and chargeable weight of the package.

Read our guide on how to correctly calculate your postage, or try our postage calculator. Plus, our packaging tips has info on how to get your items to their destination safely.

Boxes

Boxes

We have a range of box shapes – some small and cube-shaped, others large and thin. The number after ‘BX’ doesn’t always tell you how big a box is, and height varies, even for large boxes.

Box

We’ve grouped all boxes into easy-to-understand sizes.

You might have noticed different product codes and names – we’ve listed them below – plus suggestions on what might fit in each size, tips on how to measure and postage.

Small

Dimensions

L: 140 – 220mm

W: 150 – 160mm

H: 10 – 180mm

What can they fit?

Mug, candle, small book, mobile phone (in box), CD

Product name codes

Small, BX1, BX7, BX18, BX22

Medium

Dimensions

L: 240 – 310mm

W: 190 – 225mm

H: 102 – 120mm

What can they fit?

Large book or 2-3 books, tablet computer (in box)

Product name codes

Medium, BX2

Large

Dimensions

L: 390 – 410mm

W: 280 – 300mm

H: 80 – 255mm

What can they fit?

Laptop (in box), pair of shoes (in box)

Product name codes

Large, BX3, BX4, BX5, BX24

Extra large

Dimensions

L: 430 – 500mm

W: 277 – 440mm

H: 140 – 350mm

What can they fit?

Piles of documents/folders/files, small (carry-on) suitcase

Product name codes

Extra Large, BX20, BX23

Shop extra large

How to measure

Measure your item’s maximum points and compare it with the packaging dimensions.

Boxes are listed with internal or external dimensions, which can vary slightly. Visit the product page for exact dimensions.

Measurement Box

Postage

Size and weight become important when you use packaging to post with us.

Sending 5kg or under in Australia using flat rate packaging? It’s eligible for flat rate postage.
Sending 5kg or under in Australia using other packaging? Follow flat rate postage, based on weight.
Sending over 5kg, or overseas? Postage costs will depend on the destination, delivery speed and chargeable weight of the package.

Read our guide on how to correctly calculate your postage, or try our postage calculator. Plus, our packaging tips has info on how to get your items to their destination safely.

Mailing tubes

Mailing tubes

Mailing tubes measure diameter by height, and tri-tubes measure length and width of the triangle base, by its height.

Mailing tube dimensions (Diameter x H)

Tri-tube dimensions (L x W x H)

What can it fit?

SmallS

60 x 420mm

81 x 81 x 420mm

Rolled A4 or A3 documents

MediumM

60 x 660mm

81 x 81 x 660mm

Rolled A2 documents

LargeL

90 x 850mm

121 x 121 x 850mm

Rolled A1 documents

Keep in mind the size and weight of your tube can affects how much it costs to send.

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Australia Post acknowledges the Traditional Custodians of the land on which we operate, live and gather as employees, and recognise their continuing connection to land, water and community. We pay respect to Elders past, present and emerging.

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