JT Spectra Thermal Lens Prizm 2.0 Lava 218.83 PLN 175.07 PLN Double lens (Thermal) for all spectra masks such as Proshield, Proflex, Flex 8 mm. BUY Share Article Number: 2447 Information Reviews Double lens (Thermal) for all spectra masks such as Proshield, Proflex, Flex 8 mm.