Triple double side board, Size: 72*52*3cm/146*52cm Package: shrink pack Packing: 6sets/74*53.5*21cm N.W./G.W.: 18/19 Triple double side board, double side blackboardSize: 72*52*3cm/146*52cmPackage: shrink pack Packing: 6sets/74*53.5*21cmN.W./G.W.: 18/19 Triple double side board , blackboad, writing boad