Portrait; single-sided Primary: 0.296- 0.319 mm Secondary: 0.291- 0.294 mm Both supports are machine made. The primary support is internally dyed a orange color distinct red and blue mixed fibers visible. Clumped fibers in transmitted light and a textured surface. The primary support is thicker than the secondary support but with less sizing (softer). The secondary support is brown, support; high degree of fillers (opaque in transmitted light). The felt side of support is facing up. Same primary support as 0227.139; same secondary support as 0227.140, 0227.190.