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Our 4000 and 6000 series of double-hung windows are the ultimate choice for beauty, comfort and energy efficiency.
When it comes to installing double-hung windows in your home, look no further than Window World of Rockford. They boast incredible 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 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. Plus, they’ll never chip, peel, crack or warp, and are maintenance free—their tilt-in sashes make cleaning a pleasure. These windows help to pay for themselves through lower energy costs, freedom from maintenance and increased property value.
The superior performance of 6000 series windows starts with innovation. Every precision-engineered component contributes to superior energy savings. The multi-chamber design helps trap dead air to produce an effective insulating barrier, while extra-thick, fusion-welded frames and sashes provide superior structural strength and create a permanent barrier against air and moisture infiltration, adding up to greater energy savings and lower utility bills.
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.
Yes! Save on heating and cooling costs year-round with the SolarZone™ TG2 Elite™ insulated glass package. In warm weather, it will reduce solar heat accumulation, minimize interior glare and lower interior glass temperature. In cool temps, it delivers outstanding thermal performance and warmer interior glass surfaces to maintain comfort in the winter. This package also meets all ENERGY STAR requirements.
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.