Energy Efficiency, Beauty, & Peace of Mind

Sliding Window CTThe Window World 4000 Series Sliding Window offers superior style and traditional craftsmanship with features like beveled exterior edges and an integral pull rail. Available in two and three lite styles, the 4000 Series Sliding Window’s slim frame offers a large viewing area, clean, continuous lines, and an unobstructed outlook.

Window World 4000 Series windows are available in double-hung, slider, casement, awning, picture window and architectural shapes configurations.


Take a closer look at the 4000 Series Sliding Window

Sliding Window CT

Color Options

Sliding Window Color Options CT

Solarzone Energy GlassGlass Options

SolarZoneTM insulated glass packages are offered as an upgrade to help you save heating and cooling costs while keeping your home more comfortable. In warm weather, SolarZone reduces solar heat gain, minimizing interior glare and lowers room-side glass temperature, saving energy and making your home more comfortable. In cool weather, SolarZone provides outstanding thermal performance with warmer room-side glass surfaces to help save energy and maintain comfort during a cold winter.

Solarzone Energy Glass
SolarZoneTM meets ENERGY STAR® requirements in North and North-Central Zones.
Solarzone Energy Glass
SolarZone EliteTM meets ENERGY STAR requirements in all Zones.

Grid Options

Flat, sculptured, and simulated divided lite grids are available in standard and custom patterns.
Grid Options CT
Grid Options CT


2-Lite Min. and Max. Sizes

2lite Sliding Window

3-Lite Min. and Max. Sizes

3lite Sliding Window

Sliding Window Photo Gallery

Return to Top