Duck canvas is more tighly woven than plain canvas. Duck fabric is woven with two yarns together in the warp and a single yarn in the weft.
Our heavy weight, un-primed, #10 cotton canvas is 96" wide and weighs 14.75 oz. per square yard.
Our lighter weight, un-primed, #12 cotton canvas is available 60" and 120" wide and weighs 11.5 oz. per square yard.