9mm or 12mm hardwood plywood (WD17)

I am looking for 9mm or 12mm hardwood plywood to fix my double bed base. Double bed dimensions are 135 cm * 190 cm. I am not looking for the exact dimensions, even small pieces can help I will make slats out of it.

If you are throwing away or giving away then please let me know. Thanks for your help ! 🙏🏼