BMI Surplus offers a huge inventory of Ready to Ship New & Used Optical Windows & Optical Flats. Our inventory includes; zinc selenide, ZnSe, germanium, solid etalon, sapphire, silica, IR coated windows, wedges, laser grade windows, windows utilities and windows assemblies. Our inventory is updated daily and ready to ship worldwide today. Keep checking back to see our newly added optical windows and flats for sale.