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OKNA 700 Series Casement WindowThese ultra-durable and highly stylish vinyl windows are loaded with features and design innovation, making them a wonderful option for homes in Western NY.  Their strength is derived from a heavy duty welded frame, and triple-strength weather stripping with Argon gas.

  • Corrosion-resistant levers and locks make for smooth operation
  • Multiple locking systems provide enhanced protection
  • Excellent air prevention from a wind & weather-tight seal
  • Lifetime warranty against glass breakage or seal failure
  • Available in a wide selection of wood-grain options
  • ThruVision screens enhance your view and discourage pests
  • Set on a state-of-the-art fusion welded mainframe

OKNA 700 Casement windows are perfectly-suited for most homes, and have a lovely colonial design that works well with practically every style of interior design.

  • A progressive multi-point locking system placed around the entire casement window allows for a weather-tight seal by drawing the sash firmly togther and securely to the master frame.

  • The casement opens a full 90 degrees for maximum ventilation and easy cleaning from inside the home.

  • Folding crank handles, standard on all casement windows, minimize interference with blinds and other window treatments.

Interior Options

Starmark Evo Windows come standard in Euro-White. In addition, we offer 3 beautiful wood laminates to match any decor and style.






Melrose Cherry

Dark Oak

Exterior Options

Okna 700 Series Casement windows offer 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 exterior 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.




Adobe Gray

Antique Brass

Brushed Nickel

Matte Bronze


Looking for a stunning design to instantly set your home apart both inside and out? A choice of decorative grids can highlight the architectural style that speaks to you. GBG (grids between glass) consists 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. GBG grids on two tone windows are available with matching interior and exterior colors.

SDL (Simulated Divided Light)permanent interior and exterior grids will provide a truly authentic look. Interior grids are available in Euro-White or colors to match products 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 Starmark Windows can highlight the architectural style that speaks to you.

*Diamond grid pattern not available in SDL or woodgrain GBG




Glass Options

Starmark 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 variability glass texture for virtually every application and aesthetic, from traditional to modern.

Obscure Glass

Niagara Glass


ThruVision Plus is our fiberglass 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 700 Series OKNA 700 Series
Triple Pane Standard Standard
Double Pane Optional Optional
Model Name Super Deluxe Deluxe
Glass Panes Triple Pane Double Pane
U-Factor 0.20 0.25
Solar Heat Gain (SHGC) 0.23 0.27
Visible Transmittance 0.38 0.49
Condensation Resistance 71 63
Design Pressure DP70 DP70
Structural Performance R70 R70
Air Infiltration 0.02 0.02
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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