420 Double Hung

KEY FEATURES:                                                                            PERFORMANCE:

  • 5-7/8″ Deep double-hung
  • Single Glazes (4 sashes)
  • Center or exterior Screen
  • 2 Color options
  • Thermally Broken

 

  • A440: A3, C5, B7
  • I=58.2
  • U value as low as 0.44