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OKNA 410 Performance - Picture Window

OKNA 410 Series windows offer the value and performance you appreciate in a quality picture window.  These windows have become increasingly popular in the Rochester and WNY area, based on their ability to withstand harsh weather for years of use.  Whether you're looking for a window with strong framework or one that will help reduce monthly heat and cooling expenses, the 410 Wonder Saver Window works wonderfully in most homes.

OKNA 410 Picture Window

410 Series - Picture Windows

  • Choose from a wide assortment of colors, sizes and materials
  • One of our most energy-efficiency picture windows
  • Custom made to guarantee a perfect fit from the day they're installed
  • Low maintenance and simplified cleaning
  • Heatseal spacers virtually eliminate condensation buildup
  • Customize yours from our inventory of hardware
  • Brass, bronze, white, earth tone and custom color options
  • NFRC U-Factor: 0.27  Air Infiltration: 0.01   Solar Heat Gain: 0.32
Overview - Options & Accessories - Performance
Precision Weld
          Energy Star Comparison To
Glazing Option U-Value SHGC VT CR Minimum* Energy Star Minimum
Dual Glazed            
Clear Glass 0.45 0.65 0.68 45 0.30 Does not qualify
With ESP 0.27 0.32 0.59 63 0.30  10% Better
Deluxe 0.26 0.32 0.59 63 0.30 13% Better
Triple Glazed            
With ESP 0.20 0.28 0.46 69 0.30 33% Better
Deluxe 0.20 0.28 0.46 70 0.30 33% 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   R 75 R15  
Air Infiltration cfm/ft2 0.01 0.3 3,000% 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.