Block for Visible, 12 x 10mm, deep 20mm Back Catalog number: MU22-000-0478 Availability: In the manufacturer's stock Price on request - + Recommended B1450-IC UVC Indicator Cards, pack of 25 Price on request H3565-O2REG Optional O2gas regulator Price on request B1450-E UV-Clave UltraViolet Chamber, 230V Price on request