A3/C3 || 321x467mm || AKAR Capacity Book Mailers Cardboard mailers Letter Envelopes A3 Cardboard envelopes Peel & Seal Postals Mailers for Royal Mail Medium Parcel Posting Card Envelopes (Pack of 10)
A5/C5 || 180x235mm || AKAR Manilla Capacity Book Mailers Cardboard mailers Letter Envelopes A5 Cardboard envelopes for Postals Mailers for Royal Mail Large Letter Posting Card Envelopes (Pack of 100)
A4/C4||324x229mm|| AKAR White Strong C5 Board Back Pocket Peel & Seal Envelopes Hard Board Backed Envelopes Do Not Bend Envelopes A4 Cardboard Envelopes Self Seal Card Backed Envelopes C4(Pack of 50)
VIDETOL 120 Pcs A5 Cardboard Envelopes White, 250x163mm Rigid Mailer Envelopes with Peel and Seal, Lagre Cardboard Envelope for Posting and Mailing
HEIHAK 100 Pack A5 C5 Cardboard Envelopes White, 250x160mm Rigid Mailer Envelopes with Peel and Seal Strip for Posting and Mailing
SOUJAP 100 Pack A4 White Cardboard Envelopes, 325 x 230mm C4 Self Seal Rigid Mailers, Hard Board Backed Envelopes for Files, Photos, Paper
