Pella® Impervia® product line features durability, energy efficiency

Durability: Duracast™

  • The strongest, most durable material available in windows and doors
  • Nine times stronger than vinyl*
  • Twice as strong as aluminum*
  • Withstands extreme cold, as low as -40 degrees Fahrenheit, without shattering upon impact
  • Duracast withstands extreme heat, without warping, sagging or softening, at extreme temperatures of even more than +200 degrees Farenheit
  • Seacoast-worthy and resistant to corrosion, moisture, scratching, denting and impact
  • Finish won’t flake or fade
  • Low expansion and contraction rates ensure consistent bond between sash and glass
  • Backed by a limited lifetime warranty

Energy efficient

  • Cuts heating and cooling bills
  • Provides outstanding R-values
  • Excellent sound insulation
  • ENERGY STAR® qualified (with Low-E glass)

Versatility in design

  • Powder-coat factory interior and exterior finish
    • Extremely hard and scratch resistant
    • White or tan interior and exterior powder-coat finish
  • Glazing options
    • Clear, Low-E insulated glas with argon**
    • Tempered
    • Obscure
    • High-altitude
  • Grille options
    • Aluminum grilles-between-the-glass
    • Colonial, 9-Lite Prairie, Top Row and custom patterns
  • Frame options
    • New construction — standard fin
    • Block — for masonry openings or pocket replacement
    • Flush flange — stucco replacement

Performance specifications

  • National Fenestration Rating Council (NFRC) certified
  • ENERGY STAR® qualified (with Low-E glass)
  • Design pressure 50 is standard on select sizes — provides superior structural quality and resistance to wind
  • Every unit factory-tested for air infiltration

* Based on tensile tests performed in accordance with ASTM testing standards. Pella's Duracast has displayed superior performance in strength, ability to withstand extreme heat and cold, and resistance to dents and scratches.
**High-altitude Low-E insulating glass does not contain argon.