Envelope Sizes


  • No larger than C5 in size (i.e. half the size of an A4 sheet)
  • Also known as POP (Post Office Preferred)
 Min  140mm (L) x 90mm (H) x 0.18mm (D)
 Max  235mm (L) x 162mm (H) x 5mm (D)

Large Envelope:

  • Items up to C4 in size (i.e. the size of an A4 sheet)
  • Also knows as a "flat" item
 Min  140mm (L) x 90 mm (H) x 0.18mm (D)
 Max  400mm (L) x 300mm (H) x 25mm (D)


  • Caters for three dimensional items like boxes, tubes and envelopes which exceed the limits of a Large Envelope
Dimensions (Packet)
 Min  100mm (L) x 70mm (H) x 25mm (D)
 Max   L+H+D = 900mm (no dimension > 600mm)
Dimensions (Tube)
 Min  100mm (L) x 70mm (H) x 25mm (D)
 Max  L+D= 1040mm (no dimension > 900mm)