JAS structural waterproof plywood: 1. 1800*900, 1820*910 2. 12mm,18mm 3. eucalyptus/poplar core 4. bintangor/eucalyptus face JAS Certified Structural Waterproof Plywood1.JAS SP T-S F 4 Stars2.E0 (LFE)/E13.Waterproof4.For structral use5. 1800*900, 1820*9106. 12mm, 18mm7. eucalyptus/poplar core8. bintangor/eucalyptus face9. JAS STAMP of code on each board