ARCHES Watercolor Block - Hot Pressed 140 lb 12" X 16" (20 Sheets) Arches Paper from $51.45 $85.75 Qty. Add to Cart SKU: A1795074 This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. This Arches Watercolor Block contains 20 sheets of 140 lb. (300 gsm) paper. Tweet