Experts and internationally renowned artists alike appreciate the qualities of a Claessens Belgian linen, which is an archival support of exceptional quality. Claessens linen canvas is made from natural materials. - Claessens Universal Primed Linen Canvas Roll - Style 160, Medium Smooth, Acrylic Primed, 60" x 5-1/2 ydsClaessns Linen, 5.5YDX60 160 UP - This medium-smooth, single weave linen is double coated by hand with a universal primer that accepts both oil and acrylic paints. 77 TPI.