400 Double Hung
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.
| Glazing | U-Value | R-Factor | SHGC | VLT |
|---|---|---|---|---|
| Clear | 0.45 | 2.22 | 0.56 | 0.58 |
| HP Low E | 0.34 | 2.94 | 0.26 | 0.49 |
| Supra Low E Argon | 0.30 | 3.33 | 0.26 | 0.49 |
| ST Stimulus | 0.29 | 3.45 | 0.26 | 0.49 |
| DOE R5 Triple Glass Package | 0.21 | 4.76 | 0.21 | 0.39 |
Standard Features
- Thermal Fusion Welded Frame and Sash
- Sleek Slimline Sash Profile
- Quad Weather-Stripping at Key Contact Points
- Block and Tackle Balance System
- Also available in Rolling, Picture Window, and Hopper
- Full Length Lift Handles
- Full Screen
- Approved Forced Entry Locking System
- Sash Tilt In for Easy Cleaning
- Double Recessed Meeting Rail Locks
- DP 50 Rated
- Interlocking Sloped Sill
- Dual Night Latches
- 3¼" Frame Depth
Performance Options
- ST Stimulus Energy Star Approved Package
- .21 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.