| C4 size (324x229mm) |
| Made from mediumweight 100gsm paper |
| Opaque interior for security |
| Pack of 250 envelopes |
| Pocket envelope type, therefore the flap is on the short edge of the envelope |
| Press seal closure - meaning that all you have to do is apply the two glued flaps together to form an instant bond |
| Window position 25mm in from LHS, 213mm up |
| Window size of 40x100mm |