Window World - Window World Windows 4000 Series Replacement, Installation & Repair

4000 Series Double Hung Windows

  • Smooth and uniform sill
  • Low profile design
  • Expanded glass area

4000 Series Double Hung Windows

Double Hung Windows

4000 Series Technical Specifications

  • End-of-throw cam shift locking
  • Screen bulb innovation
  • Composite meeting-rail reinforcement
  • Telescoping sill
  • Interlocked sill
  • Our SolarZone™ Insulated Glass Package is designed to help you minimize utility costs and ultimately save precious dollars each month.
  • We incorporate a variety of energy-efficient components into our 4000 series, all of which ensure a comfortable living space without breaking the bank. View the details below!

Window Replacement Review by Donna W.

Stopped in to window world on Caton Farm Road. Talked to them about getting windows. He came out the next day and I really liked how he explained everything about the window. Hired them to do my windows. Kept in touch with me to let me know when the windows were in and when they would be installed. 2 guys came to do the job. Very friendly and very considerate about us and keeping the place clean while they did their job. They made no mess and cleaned up after they were done. Very nice place to get windows from and very good people that did the work. Would recommend them to others looking for windows.


SolarZone™ Insulated Glass Package

Thermal Performance Comparison*

Clear Glass Double-Hung

  • U-Value: 0.46 SHGC: 0.59

Clear Glass Sliding

  • U-Value: 0.45 SHGC: 0.59

SolarZone Double-Hung

  • U-Value: 0.29 SHGC: 0.3

SolarZone Sliding

  • U-Value: 0.28 SHGC: 0.3

SolarZone ThermD Elite Double-Hung

  • U-Value: 0.27 SHGC: 0.21

SolarZone ThermD Elite Sliding

  • U-Value: 0.27 SHGC: 0.21

SolarZone ThermD iE Double-Hung

  • U-Value: 0.27 SHGC: 0.3

SolarZone ThermD iE Sliding

  • U-Value: 0.27 SHGC: 0.3
*Whole window values are based on double-strength glass, standard 4000 Series offering with
composite reinforcements. ST and HP performance values are also available.

Air/Water/Structural Results Window World 4000

  • Air/cfm – 0.4
  • Water/psf – 6.0
  • Structural – DP40