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Call it the pinnacle of premium replacement windows if you will. OKNA 800 Series windows are as expertly designed as they are technologically advanced.  Patented Enviro-Star technology combines the highest caliber of workmanship, with a timeless design that has overtones of a more historic and prestigious look.  Each OKNA 800 window is custom made-to-order, so you'll always be assured of a snug and energy-efficient installation.

OKNA 800 Double Hung Window

800 Series - Double Hung

  • EnviroStar
  • Double weather stripped integrated locking meeting rail
  • Maintenance-free and multiple-chambered profile
  • Robust & long-lasting 3.25" precision-welded frame
  • Beautiful curves from a timeless colonial design style
  • Known for providing years of maintenance-free enjoyment
  • Superior thermal performance via patented Heatseal® spacer
  • Warm-edge technology virtually eliminates all condensation
  • We have an extensive selection of stunning window hardware
  • All 800 Series windows come standard with durable mesh Thru Vision screens
  • We can install additional locking mechanisms at your request
  • Perfect for window replacements & new builds in Rochester 
  • Triple Pane:
    • NFRC U-Factor: 0.20   Air Infiltration: 0.01   Solar Heat Gain: 0.25
  • Double Pane:
    • NFRC U-Factor: 0.26   Air Infiltration: 0.01   Solar Heat Gain: 0.29
  • OKNA 800 Series double-hung windows, feature a beveled profile with the elegance that can elevate the appearance and style of any home.  Its innovative design imparts the look and feel of real wood, with clean, traditional lines that add to their beauty.  They can be painted to match your home's siding or accents.

  • The 800 Series offers the stunning beauty of real wood windows, without the maintenance that deters some.  Their innovative design and advanced features, make it the perfect double hung window in Rochester NY.  Choose from an endless spectrum of colors and features! 

  • The hardware and options on the 800 series, are tantamount to those found on more expensive wood windows.  They're the only vinyl windows in the OKNA line without an integrated-lift rail.  Choose from a wide selection of handles common to wood windows.

  • Easy-tilt latches and dynamic design make the 800 Series not only some of the best-looking windows, they're also among the easiest to clean, maintain and operate.  With a top sash that serves as one of its defining characteristics, we see yet another design element that is inherent to luxurious wood windows.

  • Even the most seemingly-insignificant details have been taken into consideration, to give the 800 Series a look that is closer to wood than ever before.

  • Efficient, condensation-free water drainage is made possible by the 800 Series innovative one piece sloping sill.  Water runs in clean lies to prevent wear and discoloration.

  • Opening up more natural ventilation was never easier or more effective, thanks to ergonomic tilt actuator technolgy, coupled with its spring loaded ventilation system.

  • An integrated sill dam wall increases the strength of your new 800 Series wondows, while greatly minimizing the potential for leaks, corner gaps, or standing moisture.

  • An advanced bulb/gasket seal has been implemented to eliminate drafts, improve thermal efficiency provide even stronger acoustic insulation protection.  Double-layer weather stripping provides an air-tight seal that prevents heat or cold from entering or escaping.  Improve your comfort and cut your energy costs all year long!

  • The OKNA 800 Series are equipped with ultra-high density reinforcement compounds which make them among the strongest, longest-lasting and most weather-resistent double-hung vinyl windows on the market today.  See why so many Rochester residents choose the 800 Series!

  • When you incorporate the OKNA 800 Series into your home, you're getting access to some of the most advanced and innovative vinyl window technology to date.  They're designed to bridge the gap between performance, style, and long-lasting weather resistence. 

  • The Deluxe version of the 800 Series also features extrusions that are filled with dense foam, to provide even greater climate protection and interior comfort. Ask your Wonder Windows consultant for more information on OKNA 800 Deluxe Series windows.

Interior Options

In addition to traditional Euro-white, Wonder Windows offers the 800 Series windows in three additional shades. Of course, we understand that your imagination knows no boundaries, and we can custom order your new windows in literally thousands of colors. The heat reflective coatings used to custom-color your windows are environmentally safe, and guaranteed to keep their beautiful appearance for years to come.





Melrose Cherry

Dark Oak

Onyx Black

Exterior Options

Okna Windows offers six 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 exteriors a vibrant and long-lasting color finish.



Terra Brown


Basic Brown


Nicol's Black

Custom Colors


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.


Antique Brass

Brushed Nickel

Matte Bronze


GBG 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 grids 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.

Flat Grid

Contour Grid

SDL Grid

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.

Obscure Glass

Niagara Glass


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 fiber glass improved visibility screen. This product does for windows and doors what high-definition technology has done for television viewing; it improves the view by making it sharper and more vivid.

Industry Average Screen

ThruVision Plus Screen

Series OKNA Enviro-Star 1800/800 Series OKNA Enviro-Star 1800/800 Series
Triple Pane Standard Standard
Double Pane Optional Optional
Model Name Super Deluxe Deluxe
Glass Panes Triple Pane Double Pane
U-Factor 0.19 0.27
Solar Heat Gain (SHGC) 0.25 0.29
Visible Transmittance 0.42 0.53
Condensation Resistance 72 62
Design Pressure DP60 DP60
Structural Performance R60 R60
Air Infiltration 0.01 0.01
Foam-Filled Frames Yes Yes
Screen ThruVision PLUS ThruVision PLUS
Manufacturer's Warranty Lifetime Lifetime
Our Labor Warranty Lifetime Lifetime
Glass Breakage Free Free
ENERGY STAR Most Efficient Yes* Yes*

*with triple pane glass

All results numbers based on tested window sample by NFRC and AAMA testing guidelines.
Used for comparison purposes only. Actual values may vary depending on installation, size of the window and other conditions

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