Cotton Duck Canvas: Numbered(#) vs. Ounces(oz)
Cotton duck canvas for artists’ canvases is sold in two different types: numbered and ounces.
The difference is explained in the diagram below:
For numbered cotton ducks, smaller numbers mean a thicker and heavier canvas.
Upper Canada Stretchers currently carries cotton duck canvas in 7 oz (light weight), #12 (heavy weight), and #10 (extra heavy weight).