Double Hung Windows
4000 Series Double Hung Windows
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.
You will find that 4000 Series vinyl frames will never chip, peel, crack or warp, and are maintenance free. The 4000 Series tilt-in sashes make cleaning a pleasure due to our effortless tilt latch.
The ultimate choice for beauty, comfort and energy efficiency. The 4000 Series windows help to pay for themselves through lower energy costs, freedom from maintenance and increased property value. Our impressive Lifetime Limited Warranty delivers the peace-of-mind you would expect from an industry leader.
4000 Series Features
- Fusion-welded sash & mainframe adds strength and rigidity
- Fully extruded lift rail adds strength, durability and ease of operation
- Hidden screen track produces clean lines and added beauty
- Protective hollow bulb seal at sill for added weather protection
6000 Series Double Hung Windows
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.
6000 Series windows features a sloped sill helping to prevent air and water infiltration while maintaining a timeless, detailed appearance. Beveled mainframes on double-hung and sliding windows complement any home style.
Best yet, 6000 Series windows are covered by Window World's impressive Lifetime Limited Warranty for complete peace-of-mind.
6000 Series Features
- Quad 4 weatherstripping at the header
- Triple-barrier weatherstripping between sash and jamb
- Compression bulb seal at the sill for further weather protection
- Hidden screen track produces clean lines
- Fully extruded lift rails for strength & durability
- Fusion-welded sash & mainframe adds strength and rigidity
