400 Picture

The EcoTherm 400 new construction line unites elegance and performance in a single, highly-efficient system. Engineered for strength and durability, with high-end features typically found only in the most expensive premium lines, the 400 series vinyl window delivers superior value.

Better Windows for A Better World

400 Picture

NFRC Thermal Performance Data
HP Low E0.323.130.290.54
Supra Low E Argon0.283.570.280.54
ST Stimulus0.273.700.280.54
DOE R5 Triple Glass Package0.

Standard Features

  • Thermal Fusion Welded Frame
  • Also available in Rolling, Double Hung, and Hopper
  • Full Screen
  • DP 50 Rated
  • Interlocking Sloped Sill
  • 3¼" Frame Depth

Performance Options

  • ST Stimulus Energy Star Approved Package
  • .19 U-Value Triple Glass Package
  • DP 65 Upgrade
  • White, Beige and Bronze/White Colors
  • Flat, Profile or SDL Grid Package
  • Impact Rated

Builder Options

  • Integral Nail Fin and J-Channel
  • Cambridge Flat Casing
  • 4 9/16" Pre-Primed or Clear Extension Jamb
  • 6 9/16" Pre-Primed or Clear Extension Jamb

© 2010 KASSON AND KELLER, INC. EcoTherm Window Systems, a quality product of Kasson and Keller, Inc. All rights reserved.