310 x 250 x 50mm (A4) mailing boxes
The 310 x 250 x 50mm box is a slim A4 mailing box: a full A4 footprint at just 50mm high. Use it for books, documents, folded clothing, prints and flat gifts. Choose from diecut mailers in white, brown, black, rose pink and mint blue.
Drawn to scale (length x width) next to nearby sizes. Click a size to compare.
Pick a colour and style. Click a swatch to shop.
Sizes are internal dimensions (length x width x height). Pack quantities are shown on each product page.
310 x 250 x 50mm mailing box FAQs ▾
310 x 250 x 50mm mailing box FAQs
Is 310 x 250 x 50mm the internal size?
Yes. 310 x 250 x 50mm is the internal size (length x width x height), so your item needs to be slightly smaller.
Does a 310 x 250 x 50mm box fit an AusPost satchel?
Yes, it fits an Australia Post large prepaid satchel. See all boxes for large satchels.
What fits in a 310 x 250 x 50mm box?
Books, documents, folded clothing, prints and flat gifts.
What colours does the 310 x 250 x 50mm box come in?
White, brown, black, rose pink and mint blue.












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