PLAZA® Insulating Varnish | PLAZA-IV-F-50 | Baking PLAZA® Insulating Varnish | PLAZA-IV-F-50 | Baking Thermal Class: Class F (155 Degree C) Description/Chemical Base: Isophthalic Alkyd based solvented baking Impregnating Varnish Equivalent Grade: Elmotherm F 50