4000-Series Double-Hung Windows

Window World 4000-Series Exclusive Features:

• Fusion welded sashes and mainframe for added strength and rigidity

• Beveled exterior mainframe for a clean, elegant look

• Hidden screen track for clean lines and added beauty

• Sloped sill forces water to drain to the exterior of the window

• Double barrier weather-stripping at sash sides help keep out dirt and protect against air infiltration

• Protective bulb at the sill seals out dust, dirt, and air infiltration

• Half fiberglass screens provide ventilation while keeping insects out

Features Standard on all Window World Windows:

• Vinyl frames and sashes made tough and solid with uPVC powder that will never chip, peel, crack or warp

• Multi-chambered sash and mainframe for superior thermal efficiency

• Intercept® Warm Edge Spacer System maximizes performance and longevity

• Interlock at sash meeting rails creates a super-tight seal against air infiltration and adds to your sense of security

• Drop-in glazing for extra protection from the elements

• Fully extruded lift rails provide strength and stability for easy operation

• Dual ventilator locks provides safe, secure ventilation

• Full balance covers help protect against air infiltration while adding a finished look to the window frame

• Constant force balance system eliminates sash cords, weights and pulleys. You'll benefit from smooth, comfortable fingertip operation

• Tilt-in top and bottom sashes make cleaning safe and easy from inside the home

Enhance your Windows with these Options:

• SolarZone™ Insulated Glass Package featuring Low-E Glass and the Intercept Warm Edge Spacer System for enhanced insulating performance. Click here for details

• Full fiberglass screens provide ventilation while keeping insects out

• Standard, contour, or brass grids-placed between the panes for easy cleaning. Click here for details

• Specialty grooved glass panels for a truly custom look.  Click here for details

• Enhance the window with different color or woodgrain choices. Click here for details

Cut-away of 4000-Series Window.
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Window World's exclusive cam action lock and keeper help to add to your security.

The low-profile tilt latch and sash vent locks add versatility to the double-hung window.