This window replaces the one the Kayfun [lite] originally comes with, it’s available in two different versions.
Made from Polyetherimide (PEI). This material is extremely sturdy and resilient against aggressive e-liquids.
Made from Poly(methyl methacrylate) (PMMA), better known as acrylic glass. This material has a beautiful “iced” finish that turns crystal clear when in contact with e-liquid.
WARNING: PMMA is not resilient against aggressive e-liquids.
1x Kayfun [lite] window