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With various sizes available, it can get confusing selecting the right envelope for your needs. Use our handy guide to ensure you’re making the right choice
Here are the most commonly used envelopes in Australia.
A DL (Dimension Lengthwise) envelope measures 110 x 220mm. It fits A4 paper folded into thirds. These envelopes are popular for both professional and personal correspondence.
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A DLX envelope measures 120 x 235mm. Slightly larger than DL envelopes, it fits A4 paper folded twice and is suitable for thicker documents.
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A B4 envelope measures 250 x 353mm. Slightly larger than C4 envelopes, it fits unfolded A4 paper and is ideal for thicker documents.
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A C4 envelope measures 229 x 324mm. It fits unfolded A4 sheets. These are ideal for documents that need to remain straight or unfolded, such as certificates, legal paperwork and business correspondence.
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A C5 envelope measures 162 x 229mm. It fits A4 paper folded in half, or A5 paper unfolded.
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A C6 envelope measures 114 x 162mm. It fits A4 paper folded into quarters, A5 paper folded in half or A6 paper unfolded. C6 envelopes are commonly used for invitations, greeting cards and handwritten letters.
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Besides size, there are several other features to distinguish envelopes.
There are two types of flaps: wallet and pocket.
Envelopes either have a plain face or a window face.
There are three types of closures for envelopes.