- Works with Perma-Shield Casement Windows manufactured from 1966 to Present.
- New High-Performance Low-E4 glass replaces previous versions of Low-E glass.
- Low-E4 glass showed up to 25% in savings on cooling bills and 10% on heating bills over ordinary dual pane glass.
- Protects interior from UV rays that causes material fading.
- This new glass reduces water spots up to 99% - Glass will stay cleaner.
- 20-year limited warranty.
- This sash has an visible glass size that measures 19-5/16" wide by 12-5/8" high.