Okna Double Hung 400 Series Precision Weld

The OKNA Precision Weld is an excellent value when making the choice to replace windows in your home. The Precision Weld offers clean, modern lines, high-quality craftsmanship, and many options to beautify your home while making it energy efficient. Since all OKNA products are custom-made, you can be sure of a perfect fit which translates to savings on time and labor during installation.

We beat ANY written estimate and offer free estimates with no obligation.


  • Full 3¼” Depth Welded Mainframe that features beveled exterior curves that not only have a modern day look but also allow for maximum weld surface resulting in superior strength and years of long-lasting performance.
  • Push Button Spring-Loaded Vent Latches allow both window sashes to remain partially open for ventilation.
  • The standard screen is equipped with a heavy-duty lift handle running the width of the screen. This gives the screen a clean aesthetic as well as additional strength.
  • The 400 Series offers a fully integrated lift rail giving the window a nice, contemporary look.
  • A one-piece sloped sill allows for proper water drainage without leaks.
  • Optional foam-filled insulated extrusions add energy efficiency – Deluxe version only.
  • (Insulation type may vary during the manufacturing process)


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