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Our 4000 and 6000 series of double-hung windows are created especially for superior performance, durability, and energy efficiency year-round.
Whether you are looking to select windows for a new home, or you need to replace your current windows, double-hung windows from Window World are a classic option that come in a variety of styles and sizes. More features:
Double-hung window colors to meet your specific taste.
*Color options may vary based on package, dimensions and more.
4000 series windows from Window World of Central Illinois are beautiful as well as remarkably solid, sturdy and stable. Our beveled mainframe design is exceptionally slim and refined. Their sleek construction easily complements any type of architecture. You will find that 4000 series vinyl frames will never chip, peel, crack or warp, and are maintenance-free.
The superior performance of 6000 series windows starts with innovation. Every precision-engineered component contributes to superior energy savings. Best yet, 6000 series windows are covered by Window World of Central Illinois’s impressive limited lifetime warranty for complete peace-of-mind.
6000 Series Features
When it comes to your home, energy-efficient windows require less energy to heat your space than traditional products. That means savings on your monthly bills and comfort year-round.
This classic window style allows for both the top and bottom panes of the window to move up and down, operating independently.
Our double-hung windows are built to fit your home’s specific measurements. Contact us to learn size specifications of our different models.
Yes! When extreme wind and weather hit, our proprietary sill interlock stands strong. Traditional slope sill designs can allow the sash to bow during powerful winds, but with our interlocking sash-to-sill technology, the sash is channeled firmly into the window frame for a unified wall of strength.