UHV Fused Silica (SiO2) Viewports Categories: Fused Silica Viewports DUV Grade EUV 193nm Grade 1.33CF 2.75CF 4.50CF 304SS Low mu SS Fused Silica Viewports / Fused Silica Viewports DUV Grade EUV 193nm Grade 1.33CF 2.75CF 4.50CF 304SS Low mu SS EUV 193nm Grade | 1.33CF | SiO-011 from $470.00 EUV 193nm Grade | 1.33CF | Non-Magnetic | SiO-031 from $640.00 EUV 193nm Grade | 2.75CF | SiO-012 from $660.00 EUV 193nm Grade | 2.75CF | Non-Magnetic | SiO-032 from $940.00 EUV 193nm Grade | 4.50CF | SiO-013 from $1,525.00 EUV 193nm Grade | 4.50CF | Non-Magnetic | SiO-033 from $2,125.00 Return to Products Alternative Viewport Materials