One of the first forms of communication between companies often comes in the form of a letter, and therefore the envelope you use is vital in portraying your company's image. Envelopes come in all manner of sizes, styles, materials and colours. The most common envelope sizes are; DL, C6, C5, C4 and these correspond with the most common stationery sizes which are A4, A5, A6 and compliment slip size.
Postage paid (PPI) envelopes
We specialise in printed postage paid envelopes. PPI envelopes are widely used to save time in your mailroom as there is no need for stamps as the postage (1st class or 2nd class) is already pre printed. The most useful application for PPI is return envelopes.
To use a PPI, you will need to set up an account with Royal Mail. You can contact them via their website.
Once you have an account, you can use their online PPI Producer. This will take you through 5 easy steps:
- Enter your Postage Paid licence number.
- Choose the type of PPI you require (1st class, 2nd class, Welsh or English).
- Choose your PPI design.
- Preview your design.
- Final step is to choose a file type - JPEG or TIFF. We can then do the rest.
Envelope sizes
DL Envelopes - DL envelopes hold an A4 sheet folded twice; into 3 parts. This is the most common size of envelope; with most offices sending out their branded stationery in this size letter. Whilst this is the most popular size it does involve folding your stationery in three whilst some people may prefer not to do this so may well be better off with the C4 or C5 sizes.
C6 Envelopes - C6 envelopes hold an A4 sheet folded twice in quarters or an A5 sheet folded in half.
C5 Envelopes - C5 envelopes hold an A4 sheet folded once down the middle, or an unfolded A5 sheet.
C4 Envelopes - C4 envelopes hold an A4 sheet unfolded. C4 envelopes are just slightly bigger than an A4 piece of paper or stationery, enabling them to carry a brochure or catalogue.
Styles of envelopes
There are three main styles of envelope; Wallet, Pocket or Banker. Wallet and banker envelopes both open along the longer edge, while pocket envelopes open along the shorter edge. Pocket and wallet flap shape is usually a trapezoid and can be used in mailing machines. Banker envelopes open with a large ‘V’ shaped flap and are not suitable for mailing machines.
There are three main ways of sealing an envelope: peel and seal envelopes, self seal envelopes or gummed seal envelopes.
With Royale Graphics range of envelopes and stationery you are sure to be able to send out letters to give exactly the look you want for your company.
For a quotation for your plain or printed business envelopes please email us or fill in our on line enquiry form. Alternatively, you can call us on 0115 949 1880

