4000 Picture
The EcoTherm 4000 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 4000 vinyl replacement window delivers superior value.
| Glazing | U-Value | R-Factor | SHGC | VLT |
|---|---|---|---|---|
| Clear | 0.45 | 2.22 | 0.61 | 0.63 |
| HP Low E | 0.32 | 3.13 | 0.29 | 0.54 |
| Supra Low E Argon | 0.28 | 3.57 | 0.28 | 0.54 |
| ST Stimulus | 0.27 | 3.70 | 0.28 | 0.54 |
| DOE R5 Triple Glass Package | 0.19 | 5.26 | 0.22 | 0.41 |
Standard Features
- Thermal Fusion Welded Frame
- Sleek Slimline Sash Profile
- 3¼" Frame Depth
- Also available in Rolling, Double Hung, and Hopper
- DP 50 Rated
- Interlocking Sloped Sill
Performance Options
- ST Stimulus – Energy Star Approved Glazing Package
- DOE-R5 Glazing Package
- White, Beige and Bronze/White Colors
- Cherry, Light and Dark Oak Simulated Woodgrain Interior
- 14 Exterior Decorative Colors
- Flat, Profile or SDL Grid Package
- Foam Frame Wrap
© 2010 KASSON AND KELLER, INC. EcoTherm Window Systems, a quality product of Kasson and Keller, Inc. All rights reserved.