English 20 pound bond g/m² Wikipedia Wikipedia article English basis weight Wikipedia article g/m² basis weight Wikipedia article g/m² density and calipers to that of paper English g/m² English to that of paper .0038 inches thick English g/m² Paper Weight details English g/m² [en] quite a lot thicker than paper g/m² Wikipedia article English Wikipedia article g/m² to that of paper Wikipedia article details English g/m² Wikipedia article 0.105mm