The high-end Okna 800 series double hung, double pane with clear glass has a high density composite reinforcement in the frame for even more durability. Provides a traditional look of wood without the maintenance. There are many glass options to consider.
- 3000% better air infiltration protection than Industry Standards. WOW
- Magnetic Seals dramatically reduce drafts and save energy
- Maintenance free rigid multi-chamber vinyl profile.
- Full 3 1/4" Depth Welded Mainframe for long lasting performance.
- Heatseal® warm edge spacer system improves thermal efficiency and lowers condensation on the inside of the window.
- Full integral interlock with double weather-stripping.
- Numerous hardware options for any decor.
- Factory installed fiberglass mesh half screen with Optional locks
| Energy Star | Comparison To | ||||||
| Glazing Option | U-Value | SHGC | VT | CR | Minimum* | Energy Star Minimum | |
| Dual Glazed | |||||||
| Clear Glass | 0.45 | 0.59 | 0.61 | 45 | 0.30 | Does not qualify | |
| Industry | Comparison To | ||||||
| Our Windows | Minimum | Industry Minimum | |||||
| AAMA Rating | R 60 | R 15 | |||||
| Air Infiltration cfm/ft2 | 0.01 | 0.3 | 3000% | Better | |||
| Water Penetration mph | 59 | 33 | 79% | Better | |||
| Structural Integrity mph | 187 | 94 | 99% | Better | |||
