Board Back Pocket Peel and Seal Window Manilla C4 324×229mm 120gsm. Heavy duty board back envelopes in white and manilla, made using 1000 micron backing board and a heavyweight face paper to ensure protection when posting bendable items.. Box Quantity: 125. Pallet Quantity: 8000. Features. Envelope media weight. 120 g/m². Window dimensions (W x H). 40 x 105 mm. Window. Yes. Product colour. Brown. Envelope format (ISO 269). C4 (229 x 324 mm). Weight & dimensions. Length. 324 mm. Width. 229 mm
