Envelopes
C5 Self Seal White Envelopes with Window 229 x 162mm 90gsm - Pack of 1000
Size: C5 (229 x 162mm) Colour: White Quantity: 1000/Pack GSM: 90gsm Envelope Type: With Window
https://www.bizrate.co.uk/envelopes/c5-self-seal-white-envelopes-oid21210055607.html