UHV Fused Silica (SiO2) Viewports Fused Silica Viewports / EUV 193nm Grade Clear Fused Silica Viewports DUV Grade EUV 193nm Grade 1.33CF 2.75CF 4.50CF 304SS Low mu SS Filters Categories Fused Silica Viewports DUV Grade EUV 193nm Grade 1.33CF 2.75CF 4.50CF 304SS Low mu SS Filter Clear Filter 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 No results found No results match your search. Try removing a few filters. Return to Products Alternative Viewport Materials