The double hung 800 double pane Deluxe is a top choice of homeowners looking for high-end windows. As with all Okna windows it comes with a limited lifetime guarantee and our labor guarantee as well. For the money you will have a hard time finding any window with an equally rated performance.
- 13% Better than Energy Star® minimum
- 3000% better Air Infiltration protection compared to Industry Standards
- Magnetic Window to frame seals virtually eliminates drafts
- Maintenance free design and construction
- 3 1/4" Depth Welded Mainframe provides lasting performance.
- To lower condensation on the inside of the window the 800 series utilizes our Heatseal® warm edge spacer system
- 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 | |||||||
| Deluxe | 0.26 | 0.29 | 0.53 | 62 | 0.30 | 13% Better | |
| 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 | |||
