Replacement Window

4000 Series

Vinyl Double Hung

4000 DH 4000 DH

The EcoShield 4000 double hung 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.

Click here for Color Options

Click here for DOE R5 Glazing information

Standard Features

  • Thermal Fusion Welded Frame and Sash
  • Sleek Slimline Sash Profile
  • Quad Weather-Stripping at Key Contact Points
  • Block and Tackle Balance System
  • 3 ΒΌ" Frame Depth
  • Also available in Rolling, Picture Window, and Bay
  • Full Length Lift Handles
  • Locking Half 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

Performance Options

  • ST Energy Star Glazing Package
  • DOE-R5 Glazing Package*
  • White, Beige and White/Bronze Colors
  • Cherry, Light and Dark Oak Simulated Woodgrain Interior
  • 14 Custom Exterior Colors
  • Flat, Profile or SDL Grid Package
  • Foam Frame Wrap

*Based on the Department of Energy R5 Building Technologies rating for high performance windows.


Thermal Performance Data - 4000
DOE - R5 - Triple0.210.210.39
ST Energy Star0.280.260.50
High Perf. Low E0.320.270.50
Full test results with grids or without grids

Not sure what the difference is between a double hung window and a single hung window? Check our frequently asked questions page for answers to common window questions.

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EcoShield Window Systems, a quality product of Kasson and Keller Inc.
Manufacturing replacement windows, new construction windows, and storm windows since 1947

Product information on this site is subject to change without notice.
Please contact your dealer or customer service representative for the most up to date information.