PRODUCT : DALER ROWNEY LANGTON WATERCOLOUR BLOCK – NOT SURFACE SIZE : 12″ x 9″ PAPER WEIGHT : 140lb / 300gsm No. OF SHEETS IN PAD : 12 BINDING : GUMMED ON ALL 4 SIDES DESCRIPTION : For many years, artists have appreciated the qualities of the Langton paper. It is colour stable, mould made and acid-free to prevent the deterioration of paint and to preserve the integrity of the paper over time.