We stock all sizes of envelopes here at IrishEnvelopes from the smallest one (98 x 67mm) to our largest C2 (625 x 444mm). However there are 4 main envelope sizes that you will be most familiar with and make up to over 90% of all envelopes sold.
Briefly, illustrated below, the 4 most common sizes are as follows;
This is a C4 size envelope. It is one of the most common and can hold a full sheet of A4 without having to fold it. The dimensions are 324mm x 229mm (12¾" x 9")
This is a C5 size envelope. It can hold an A4 sheet of paper folded in half once, or an A5 sheet unfolded. The dimensions are 229mm x 162mm (9"x 6?")
This is a C6 size envelope. It can hold an A4 sheet of paper folded twice, an A5 sheet folded once, or A6 size paper unfolded. The dimensions are 114mm x 162mm (4½" x 6?")
This is a DL size envelope. It is most commonly used with businesses. It can hold an A4 sheet of paper, folded twice, or an A5 sheet folded once. The dimensions are 110mm x 220mm (4?" x 8?")
A wallet envelope has the flap on the long edge.
A pocket envelope has the flap on the short edge.
A gummed envelope flap needs to be wetted to stick. This is usually the cheapest type of envelope.
Self Seal Above:
A self seal envelope flap sticks when it is pressed down without the need for wetting.
Peel and Seal Above:
A peel and seal envelope flap has a paper strip that needs peeling off to reveal a sticky flap underneath. This is characteristically the most expensive type of envelope.
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