4000 Series windows from Window World are beautiful and durable. The beveled mainframe design is slim and refined, creating a sleek look. Made from virgin vinyl, our frames never chip, peel, crack, or warp. The cherry on top? They’re low-maintenance thanks to tilt-in sashes that make cleaning a breeze.
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.
Features
- Ensure thermal efficiency with multi-chambered sash & mainframe
- The hidden screen track produces clean lines and add beauty
- Beautiful beveled exterior profile gives windows a clean, elegant look
- Reinforced narrow silhouette frame and sash profiles make a statement of style with their low-profile design.
- Composite meeting-rail reinforcement allows for secure mounting of hardware; the non-conductive material helps reduce the transfer of energy.
- End-of-throw cam shift locking delivers increased strength and protection to the recessed lock.
- The smooth and uniform, true sloped sill quickly directs water runoff without the use of weep holes, keeping the window exterior clean and attractive.