Mon - Fri: 8:30 - 5:00


OKNA casement windows offer a new level of beauty and functionality with smooth opening for maximum ventilation and effortless cleaning.


Our 700 Series Casement cranks out smoothly for maximum ventilation as well as effortless cleaning. The window can be hinged on either side with the sash opening outward in a swinging motion. The casement offers a whole new level of beauty in a window that’s also wonderfully functional.

OKNA double hung
  • Fully welded beveled frame and sash for exceptional strength.
  • Triple weatherstripping to prevent air, water, dust and noise infiltration.
  • High performance operators for corrosion resistance, effortless operation, and easy adjustability.
  • Heatseal warm edge spacer system for excellent thermal efficiency and drastic reduction in the possibility of condensation on the inside of your window.
  • Full fiberglass mesh screen.


All of our windows and doors are manufactured from high quality materials and are backed by a Transferable Lifetime Limited Warranty.


Full 3¼" Depth Welded Mainframe with beveled colonial exterior features curves that are not only beautiful, but also allow for maximum weld surface resulting in strength and years of long lasting performance.

Optional foam-filled insulated extrusions add energy efficiency - Deluxe version only. (Insulation type may vary during the manufacturing process).

Standard Sash lock with tamper-proof cam ensures a much smoother turn, and increases the life cycle over traditional locks.

Optional Auto-Lock features an exclusive automatic locking system which is easy to engage.

The Bulb Gasket Seal improves thermal performance, lowers drafts, and provides better acoustic insulation.

Push Button Spring-Loaded Vent Latches allow both window sashes to remain partially open for ventilation.

The sill dam wall is mortised into the jamb adding strength and lowering the possibility of leaks.

The 500 Series offers a fully integrated lift rail giving the window a nice, contemporary look.

*OKNA windows are available in many configurations including custom colors, grid patterns and profiles. For more information, please contact us at (770) 928-9922.

Pinnacle Window & Siding: Where Quality Meets Affordability.

Flexible Financing Options Available for All Our Products.