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400 Series Double Hung Tilt
Traditional double-hung tilt window delivering smooth operation, dual-sash ventilation, and easy cleaning with energy efficiency.
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Built for Performance.
Designed for Sustainability.
Discover how Fibertec’s fiberglass windows and doors can lower energy costs, meet green building standards, and enhance comfort in any space.
- Triple-glazed, Passive House–ready window systems
- CSA- and LEED-compliant solutions for residential and commercial builds
- Backed by nearly 40 years of energy-efficient innovation