Insul-Tec 500 Series

More ways to balance performance and design.

The OKNA 500 Series expands the range of energy-conscious, low-maintenance window configurations and customization choices for buyers comparing comfort, appearance and long-term value.

OKNA Insul-Tec 500 Series double-hung windows installed in a bedroom
OKNA Insul-Tec 500 Series double-hung windows. Product photography courtesy of OKNA Windows.

Why consider the 500 Series?

The 500 Series is aimed at projects where window performance, structural design and customization are important. It is available in a broad family of operating and architectural styles, making it useful for whole-home projects with several opening types.

Good fit for: whole-home replacements, projects combining operating and fixed windows, and buyers seeking a wider range of configuration and finish choices.

Available configurations

  • Double-hung, slider and picture windows
  • Casement and awning windows
  • Bay and bow combinations
  • Garden windows
  • Specialty shapes and architectural configurations

Glass, grids, colors and hardware

The final window can be configured with available insulated-glass packages, interior and exterior finishes, decorative grids, screens and hardware. We can help identify which selections are offered for your chosen style and size.

400 Series or 500 Series?

There is no universal answer. The better choice depends on opening type, desired features, visual preferences and budget. Send us your project list and we can quote appropriate configurations from each line where comparison is useful.

Compare the OKNA 400 Series →