Easy to use Self Seal closure High quality 90 gsm paper Perfect for business correspondance, letters, brochures and more Handy shrink wrapped pack of 50 C5 takes an A4 sheet of paper folded in 2 Note The stock should ideally be in a dry place at a temperature of 20 - 25 °C and at a relative humidity of 40 - 50%. If the stock moves to a different location with different storage conditions, the material should have enough time for acclimatisation.