Useful envelope and mailing information
Office Monster stocks a wide variety of envelopes for every occasion, in both window envelopes and non-window envelopes and across all sizes from C5 envelopes, C4 envelopes and DL envelopes. All of our envelopes are available in stock for next day delivery and if you spend over £50.00, you will also receive next day delivery free of charge.
Our handy envelope buying guide, will help you decide which envelope you need, covering explanations of various features, such as: envelope window positioning, dimensions, seal type, colour (manilla or white), and everything in between. We stock envelopes from all major brands including Q-Connect Envelopes, Basildon Bond Envelopes, Conqueror Envelopes, New Guardian Envelopes, Plus Fabric Envelopes and many more.
Envelope sizes
Choose from a variety of sizes and formats, popular sizes include:
Other formats:
Envelopes come in two standard orientations:
Don’t forget!
Letter
Large Letter
Small Parcel
The size of the envelope affects the postal costs with Royal Mail, further information can be found at Royal Mail
What quality do you require?
Choose from 70gsm (lightweight) to 130gsm (heavyweight) papers.
Heavyweight papers are stronger and, when coupled with a smooth finish, help deliver the right first impression to the recipient.
If you’re looking for a recycled envelope that doesn’t compromise on quality then the Basildon Bond range is for you. The 100% recycled paper is high-white, without the use of bleaching. The window film is biodegradable meaning even the window versions can go in your paper recycling.
Do you need a window?
Window envelopes are useful for bulk mailings, invoices and statements where the recipients address is automatically printed on the document. The size and position of the window is always described with the flap upwards. SIZE is mesaured HEIGHT first and width second ( A x B). POSITION is measured by the distance in from the left-hand side ( C) and up from the base ( D).
What colour do you require?
Most envelopes come in two colours
What type of seal?
