... core,popar core size:4'X8' 3'X7' thickness:3mm,6mm,9mm,12mm,15mm T1-11, grooved plyood, grooved wood,grooved MDFsize ... :4'X8' 3'X7' 5X9'thickness:3mm,6mm,9mm,12mm,15mmgrooved paperovered plywoodgrooved melamine MDFgrooved boardmermaterial: pine core,popar core ...