PremierTeam pocket brown envelopes in C4 size measure 324 mm x 229 mm or 12 3/4 x 9. It has a peel and stick seal on the short side. C4 envelopes from PremierTeam measure 324 mm x 229 mm or 12 3/4 x 9 and are made from a quality 115gsm brown manilla paper to give you a professional look for every letter or mailing that you send. These plain envelopes feature a peel and stick seal - simply peel off the protective tape and stick the flap down for a secure and long lasting seal.