Stop right here and consider this top of the line rated sliding window from the Okna 500 series. Look at the performance ratings on this window and compare it to other sliding window that cost mush more. The Insul-Tec 500 triple pane Deluxe with krypton gas delivers everything you could ask for in any window.
- 47% Better than Energy Star® minimum
- 333% Better Air Infiltration protection than Industry Standards.
- Triple pane glass with krypton
- Foam filled frame
- 3¾" Depth Welded Mainframe with superior strength long lasting performance.
- The Heatseal® warm edge spacer system provides excellent thermal efficiency
- Full integral interlock with double weather-stripping.
- Optional Auto-Locking system
- Heavy gage fully extruded handles
- Factory installed Fiberglass mesh half screens come standard on all windows
- Great for Replacement and New Construction applications
- Available in 2-lite and 3-lite choices
- Available grids between glass in Common Grid Patterns
| Energy Star | Comparison To | ||||||
| Glazing Option | U-Value | SHGC | VT | CR | Minimum* | Energy Star Minimum | |
| Triple Glazed | |||||||
| Deluxe/krypton Gas | 0.16 | 0.26 | 0.42 | 74 | 0.30 | 47% Better | |
| Industry | Comparison To | ||||||
| OKNA Windows | Minimum | Industry Minimum | |||||
| AAMA Rating | R40 | R15 | |||||
| Air Infiltration cfm/ft2 | 0.09 | 0.3 | 333% | Better | |||
| Water Penetration mph | 59 | 33 | 79% | Better | |||
| Structural Integrity mph | 153 | 94 | 63% | Better | |||
