Click to expand Tap to zoom EM-Tec 20nm silicon nitride membrane, 1.0 x 0.25mm window, 200µm frame SKU AU-23-202125-10 Original price $434.52 - Original price $434.52 Original price $434.52 $434.52 - $434.52 Current price $434.52 | / Choose a variant 10 - $434.52 Units per package: 10 10 Quantity Add to cart