These PPS Plainface C6 Envelopes are a great way to send out A4 sized documents. They are plain faced so you can write on them freely or affix your own address labels. Features: These envelopes are C6 sized and will fit A4 sheets folded twice, into quarters. The peel and seal closure system is easy to use. Each envelope has an 80 gsm construction. They have a wallet opening which makes inserting mail hassle free. These envelopes are white. There are 500 envelopes in this pack. The envelopes measure 162 x 114 mm.