Experts and internationally renowned artists alike appreciate the qualities of a Claessens Belgian linen - an archival support of exceptional quality. Claessens linen canvas is made from natural materials. - Claessens Linen Canvas Roll - 82" x 5-1/2 yds, Oil Primed, No, 12, Smooth TextureClaessens Artists Linen, 5.5YDX82 12 OP - Claessens' heavier portrait grade linen, at 11.3 oz per square yard (primed), has a fine texture and smooth surface. Use it for larger works that require more support. 91 TPI.