Understanding the standard envelope sizes used in Australia is essential for businesses and individuals involved in mailing documents, invitations, or promotional materials. This guide provides a comprehensive overview of the commonly used envelope sizes in Australia and their specific applications.
Overview of Envelope Sizes
Envelope sizes in Australia follow international standards, specifically the ISO 216 standard, which is also used for paper sizes. The most common sizes are:
DL (Dimension Lengthwise): 110mm x 220mm
C4: 229mm x 324mm
C5: 162mm x 229mm
C6: 114mm x 162mm
B4: 250mm x 353mm
B5: 176mm x 250mm
B6: 125mm x 176mm
Each of these sizes serves different purposes, catering to various mailing needs.
Common Envelope Sizes and Their Uses
DL (110mm x 220mm): This is the most widely used envelope size in Australia. It is designed to fit an A4 sheet folded into thirds. DL envelopes are commonly used for standard business correspondence, invoices, and marketing materials.
C4 (229mm x 324mm): This size is ideal for sending unfolded A4 documents. It is often used for business reports, brochures, and large forms. The C4 envelope ensures that documents remain flat and uncreased during transit.
C5 (162mm x 229mm): C5 envelopes are designed to fit an A4 sheet folded in half or an A5 sheet unfolded. They are suitable for larger greeting cards, invitations, and booklets.
C6 (114mm x 162mm): C6 envelopes are perfect for A4 sheets folded into quarters or A6 sheets unfolded. They are commonly used for smaller greeting cards, invitations, and thank you notes.
B4 (250mm x 353mm): B4 envelopes are larger than C4 and are used for sending multiple sheets of A4 paper or thicker documents. They provide extra room for bulkier items, ensuring they are protected during mailing.
B5 (176mm x 250mm): This size is used for sending A5 documents unfolded or A4 sheets folded once. B5 envelopes are suitable for medium-sized documents, catalogs, and pamphlets.
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