OKNA Enviro-Star Double Hung Windows

Major Homes is a proud supplier of OKNA Double Hung Enviro-Star windows. Contact us today for a free, no obligation, in-home estimate!


  • Maintenance free rigid multi-chamber vinyl profile
  • Full 3 1/4″ Depth Welded Mainframe with beveled colonial exterior features curves that are not only beautiful, but also allow for maximum weld surface resulting in superior strength and years of long lasting performance.
  • Heatseal® warm edge spacer system for excellent thermal efficiency and drastic reduction in the possibility of condensation on the inside of the window.
  • Full integral interlock with double weather-stripping.
  • A variety of hardware options fits harmoniously into any décor.
  • Fiberglass mesh half screens standard on all windows.
  • Optional locking screen provides an additional safety measure.*
  • Available in Replacement and New Construction applications.


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