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OKNA 820 Options & Accessories - Sliding Windows

We stand firmly behind the quality of all OKNA 820 Series windows we install, and would easily compare them to premium brand windows costing two to three times as much.   Our 820 Wonder Choice windows have become increasingly popular in the past few years, due to their stylish appearance, reliable weather resistance, leading energy efficiency and overall value.

OKNA 820 Sliding Window

OKNA 820 Series

  • Perfect as replacement windows or in new construction projects
  • Carefully designed to work with almost any room or motif 
  • Includes standard half-screen made from premium fitted mesh
  • Automatic moisture and condensation prevention feature
  • Powerful 3.25" fusion-welded mainframe construction
  • Colonial inspired curves and bevels uniting strength and beauty
  • Designed to provide years of consistently-reliable performance
  • Multi-chambered vinyl profile for maintenance-free use
  • 820 Series windows utilize Heatseal® for improved efficiency 
  • Interlocking double-insulated weather stripping
  • Increased window security with a locking screen upgrade.*
  • NFRC U-Factor: 0.26   Air Infiltration: 0.05   â€‹Solar Heat Gain: 0.28
Overview - Options & Accessories - Performance

One of the best ways to give your new replacement windows a unique look, is choosing a color that accentuates the look of your home or building.  Common colors include white, earthtone, bronze or beige, or custom color windows that can be special ordered throughout Western NY.

okna 820 options and colors for sliding windows



Simulated Divided Light (SLD)

Simulated Divided Light (SLD)

Grids allow you to give your traditional windows, the look of prestige, age or distinction.  Regardless of whether you prefer the allure of grids-between-glass (GBG), or the elegant simplicity of conventional aluminum window grids, Wonder Windows of Rochester NY has everything you need to make any room and home complete. 


5/8" Flat Grid between glass


11/16" Contour Gridbetween glass

To achieve the most authentic look possible, we recommend choosing a wood that will continue to evolve with your décor needs and changes.  We offer a lovely wood laminate or Euro-white finish, both of which can be stained or painted to complement your new windows.

Most Common Grid Patterns

Colonial okna 820 sliding window


Prairie okna 820 sliding window


Diamond okna 820 sliding window



Standard sliding window Screen

Standard Screen

Grids-between-glass (GBG):  These clever-looking grids offer all new levels of sophistication and ambiance.  They're appreciated for their combination of low maintenance and eye-catching design, and the airtight seal they provide between adjoining glass panes.     

ThruVision sliding window Screen

ThruVision® Screen

Competitor's sliding window Screen

Competitor's Screen