FAQ Knowledge Articles

The monolithic (single pane) glass Impact Zone 4 (IZ4) has been replaced by insulated glass to comply with the new thermal code requirements in the affected counties.  As a result of this change the IZ4 Casemaster products have been replaced by the Ultimate Casement. This includes operating Clad Casement and Awnings. Clad In-sash Round Tops and Clad Direct Glaze products.  IZ4 products not included are:  wood windows and doors and single glazed products, Ultimate Casement operating Round Top, French, Push Out, Venting Picture Window, replacement products and the Clad Contemporary Doors.

For more information, see:
What exactly is StormPlus?