- Recommended product.
C5 Envelopes (A5)
Here you will find all the C5 envelopes you will need to keep your business ticking over smoothly. Known as both C5 and A5 envelopes, these are suitable for an A5 paper or folded piece of A4. Browse through white or manila colours, with varying GSM values and seal types to find the perfect style to suit your needs. Available in a range of pack sizes from 1 to 1000, find the envelopes you need here. Complete your postal collection with a new ink stamp from our range.