Vertis Presents Flameproof 3.3 Borosilicate Glass Kuthu Vilakku, Diya , A Must For A Serene Puja Room. The Glass Comes From The Versatile Vertis Glass Composition 3.3 Low Thermal Expansion Borosilicate Glass Which Withstands A Temperature Of 500 Deg C. Clear And Transparent Glass Helps In Better Light Transmission. Thin And Uniform Wall Of The Glass Helps In Withstanding Thermal Shock And The Glass Lasts Longer. Vertis Glass Made From 3.3 Borosilicate Glass