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Envelopes are an important part of any business as they are what you send customers and suppliers your letters or mailings in.

At AOS Online we stock a wide range of envelopes in different styles, colours, with or without window. Choosing the right envelope can be daunting so we have listed out the most popular envelope sizes and and envelope styles to help you make the right choice. Our envelope sizes guide lists the most popular envelopes, but by going through the Envelope product category you will find we stock a whole range of different sizes and weight as well as specialist mailing envelopes and padded bags.

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