Envelopes come in many different shapes and sizes with the most common being C4, C5, C6 and DL which are suitable respectively for paper sizes A4, A5, A6 and 1/3 of A4 or compliment slip size. As well as the standard type of envelope there are also Padded Bags, Protective Envelopes, Gusset Envelopes and Machine Envelopes available.
Envelope Types
C4 Size
C4 envelopes are suitable for an unfolded piece of A4 paper. For more info on flyer distribution [1] look into our own site. C4 envelope dimensions are 229mm x 324mm. The C4 envelope is a very common piece of stationery and can be found in most offices throughout the UK. C4 envelopes are commonly used for sending contracts, reports and brochures.
C5 Size
C5 envelopes are suitable for an unfolded piece of A5 paper or an A4 sheet folded in half. C5 dimensions are 162mm x 229mm. C5 Envelopes are commonly used for mail shots or business letters.
C6 Size
C6 envelopes are suitable for and unfolded piece of A6 paper or an A5 sheet folded in half. C6 dimensions are 114mm x 162mm. C6 envelopes are popular for personal use and fit postcards or greetings cards.
DL Size
DL envelopes are suitable for a sheet of A4 paper folded twice. DL envelope dimensions are 110mm x 220mm. DL envelopes are commonly used for sending single page letters.
Board backed
Board backed envelopes offer extra protection to important documents. They are typically made using stiff, heavy duty manila board which forms the back of the envelope. This board offers rigid protection for the paperwork inside. Board backed envelopes are used for sending Photo's, employment documents, contracts and exam certificates.
Gusset
Gusset envelopes are used for sending oversized items through the postal system. They come with either a 'Block Bottom' or 'V-Shaped Bottom' which allows the envelope to expand as required. As Gusset Envelopes typically hold larger items they are generally constructed out of heavyweight paper to help prevent tearing and damage in transit. Some uses for Gusset Envelopes are for the sending of Books, Magazines and Manuals.
Padded and Bubble Bags
Padded bags and Bubble bags provide extra protection for delicate, valuable, bulky or heavy items. They are made of an outer layer of strong tear resistant paper and a bubble lined interior. Potential uses for padded bags and bubble bags are almost endless, however some common uses are for the mailing of CD's, Books and Jewellery.
Media Mailers
Media mailers are envelope style products used for storing and posting CD's and DVD's. They can range from a simple envelope sleeve which is ideal for storage and protects against dust and static to corrugated cardboard which provides protection for postal transit.