Large Size Plywood

The standard size ply sheets are 2400 x 1200 and  2440 x 1220, most sheets with come in ONE ONLY of these sizes.
We can also get oversize or Jumbo sheets with Eucalyptus core with Gaboon/Okoume faces in exterior ply with a marine glue made to European Standard EN636-2S.  See Picture to right for picture of this ply.
They come in a few size and thickness variations.  (all these size variations are not always available)

2440 x 1530 –  6, 9, 12, 15, 18mm
3050 x 1220 –  3.6, 6, 9, 12, 15, 18mm
3050 x 1530 –  6, 9, 12, 15, 18mm
3050 x 1830 –  12, 18mm

With all these sizes,  they are not available in store they a re an order in item.
These sheets are more expensive, so unless you have a special project , I would suggest you look at the standard sizes.

All are cheaper for large quantity buys.