SLIDER | SL520

• uPVC fusion welded beveled frame & sash for strength and durability.
• 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 weatherstripping. Heavy gauge fully extruded handle on bottom sash.
• Fiberglass mesh half screens standard on all windows.
• Available in Replacement and New Construction applications.

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Performance Numbers:

To see Thermal and Structural numbers for this window series please CLICK HERE to download.

Warranty:

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

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Overview

Interior Options

Our company offers an optional Almond colored vinyl in addition to our standard Euro-White to give your home a distinct look. 

All options, besides Euro-White, are available at an additional charge.

Exterior Options

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. Please contact the certified dealer in your area for pricing.

*Surcharge applied for painted screens.

Hardware

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.

Grids

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.

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. 

Specialty Glass Options

OKNA Windows offers specialty glass in a variety of distinctive choices that add visual interest to any design while offering variability in light control. Our Obscure glass for example, will be satifying to those looking for a more traditional look with obscure glass. This option is great for bathroom windows. Other available glass options are tempered, laminated, and custom configuration. 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.

Screens

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 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. ThruVison PLUS® Standard with All OKNA Windows.