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OKNA 510 Performance - Picture Windows

If you need a picture window that delivers the very best in energy-efficiency, features, low maintenance and affordability, you need look no further than OKNA 510 Series windows from Wonder Windows in Rochester.  They offer many of the features and technology found in more expensive windows, with patented features that make them truly one of a kind.

The 510 Series is ideal for routine Rochester window replacement projects, as well as for those building a new home in the WNY region.

OKNA 510 Picture Window

510 Series - Picture Windows

  • Designed to drastically reduce moisture and condensation
  • One of the most commonly-requested picture window replacement 
  • Highly energy-efficient performance on a solid welded frame
  • Easy-glide hardware and locks allow for effortless operation
  • 4 popular colors and endless choices of custom shades
  • Patented warm-edge spacers boost thermal performance greatly
Overview - Options & Accessories - Performance
          Energy Star Comparison To
Glazing Option U-Value SHGC VT CR Minimum* Energy Star Minimum
Dual Glazed            
Clear Glass 0.46 0.63 0.65 46 0.30 Does not qualify
With ESP 0.27 0.31 0.56 64 0.30 10% Better
Deluxe 0.24 0.31 0.56 64 0.30 20% Better
Triple Glazed            
With ESP 0.20 0.27 0.44 70 0.30 33% Better
Deluxe 0.18 0.27 0.44 76 0.30 40% Better
U-Value, SHGC, VT, CR values may slightly change for windows made with GBG (Grids Between Glass)
  • SHGC - Solar Heat Gain Coefficient
  • VT - Visible Transmittance
  • CR - Condensation Resistance
  • Deluxe - ESP & Foam
  • * Northern Climate Zone
**   Industry Comparison To
  Our Windows Minimum Industry Minimum
AAMA Rating (38 x 63) R75 R15  
Air Infiltration cfm/ft2 <0.01 0.3 3000% Better
Water Penetration mph 66 33 100% Better
Structural Integrity mph 210 94 123% Better

Water Penetration mph - Specifies wind load pressure in mph a window can withstand without leaking, under rain equivalent to 8" per hour. Structural Integrity mph - Wind load in mph a window can withstand before breaking.

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