Enviro-Star 820

The elegant, beveled profile of our 800 Series will enhance the beauty
of your home’s exterior

by giving it the traditional look and feel of wood windows with the performance and ease of maintenance you can only get with vinyl. The 800 Series can also be painted to match any exterior.

  • Full 3¼” Depth uPVC Fusion Welded Frame and Sash 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.
  • 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 screens standard on all windows.
  • It is the only vinyl window in our offer without an integrated lift rail.

The 800 Series offers hardware options reminiscent of classic wood windows. It is the only vinyl window we manufacture without an integrated lift rail. The slider features a handle style based on traditional wood windows.

Push Button Spring-Loaded Vent Latches allow both window sashes to remain partially open for ventilation. Standard Slim Profile Sash lock with tamper-resistant cam ensures a much smoother turn, and increases the life cycle over traditional locks. Standard factory-installed bumpers ensure quiet operation. Our window opens easily because it is mounted on brass wheels which allow the slider to smoothly glide across its track.

Interior Colors

Our company offers five beautiful interior laminates in addition to the standard Euro-White.
All options, besides Euro-White, are available at an additional charge.

Exterior Colors

OKNA Windows offers seven exterior stock color selections in addition to the standard Euro-White option to give your house a distinct look and enhance its curb appeal. You can also select custom exterior colors from a virtually unlimited selection of paints. Our paints are environmentally safe and durable, giving your exterior a vibrant and long-lasting color finish.
Exterior colors other than Euro-White must have full screen. All options, besides Euro-White, are available at an additional charge.


To create a style and finish that reflects your unique taste, our hardware is designed to harmonize with our different window styles and decor ideas.


GBG (Grids Between Glass) grilles consist of aluminum bars sealed in the insulation airspace between the two panes of glass. Because the interior and exterior glass surfaces are not affected, cleaning your windows is a much easier task.
Permanent interior and exterior grid with spacer will provide a truly authentic look. Interior grids are available in Euro-White or wood laminates to match your home’s decor. External grids are available in Euro-White or colors to match product exterior.

Grid Patterns

Are you looking for a stunning design detail to instantly set your home apart both inside and out? A choice of decorative grilles for your OKNA Windows & Doors can highlight the architectural style that speaks to you.

Glass Options

OKNA Windows offers textured glass in a variety of distinctive choices that add visual interest to any design while offering variability in light control. With a range of options at your fingertips, you can find a standard glass texture for virtually every application and aesthetic, from traditional to modern.

Regular Obscure


OKNA Windows offers factory-installed half screen with heavy-duty handle. Screens are removable from the inside for convenient storage. We also offer ThruVision Screens improving view thru the window protecting interior from insects and allowing perfect ventilation. ThruVision Plus is our fiberglass visibility screen that improves the view by making it sharper and more vivid.