Gentek 4000 Series Windows
The Gentek 4000 Series is Gentek's premium vinyl replacement window, engineered for homeowners who want maximum energy efficiency, durability, and long-term performance. Featuring a robust 4-1/2" renovation frame, innovative Innerset Sash design, fusion-welded construction, and advanced insulated glass options, the 4000 Series is designed specifically for Canada's demanding climate. Its deeper frame positions the sash closer to the home's insulated wall cavity, helping improve comfort, reduce drafts, and increase thermal efficiency while maintaining a clean, modern appearance. Every window is custom-manufactured to your home's exact specifications and is available in a wide range of styles, colours, and energy-efficient glass packages.
Benefits
Outstanding energy efficiency with EnergyPlus, Quattro, and optional triple-pane glass packages
Deep 4-1/2" renovation frame improves insulation and reduces air infiltration
Innerset Sash design positions the glass farther into the insulated wall for increased comfort during Canadian winters
Heavy-duty fusion-welded vinyl construction provides exceptional strength and durability
Multi-point locking system on casement and awning windows enhances security and creates a tighter weather seal
Steel sash reinforcement on larger windows helps resist flexing during high winds
Available in numerous styles, custom sizes, and over 20 exterior colour options, including Armour Guard matte black
Low-maintenance vinyl will not rot, peel, rust, or require painting
Backed by Gentek's transferable limited lifetime warranty