Demystifying Watercolor Paper Weight

90 lb=190 gsm140 lb=300 gsm260 lb=356 gsm300 lb=638 gsm Sizes Full Imperial=22″x30″Half Imperial Paper=15″x22″Quarter Imperial=11″x15″Elephant(USA)=27.75″x40″Double Elephant (USA)=29″x41″Double Elephant (UK)=27″x40″Emperor (USA)=40″x60″ The most common watercolor paper weights are 140 lb (190 …