Flat Open Upper/Lower Hung Window System

Overview

Engineered for performance and refined aesthetics, our premium flat open upper/lower hung window system delivers an optimal balance of security, ventilation, and architectural elegance—making it an ideal solution for contemporary residential and commercial applications.

Key Features

• Intelligent Operating Mechanism
  A single ergonomic handle seamlessly toggles between three modes: fully sealed (for weather-tight closure), ventilated (top or bottom sash tilted inward), and anti-theft lock position. This versatile operation ensures controlled airflow without compromising safety—even during rain or wind.

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• Premium Imported Hardware
  Critical components—including multi-point locks, hinges, and handles—are sourced from leading European manufacturers, ensuring long-term durability, smooth operation, and superior build quality. While this elevates the investment, it guarantees exceptional reliability and service life.

Performance Benefits

• Superior Thermal & Acoustic Insulation
  Constructed with thermally broken aluminum profiles and double-glazed low-emissivity (Low-E) units, the system achieves excellent U-values and sound reduction (up to 40 dB), enhancing indoor comfort and energy efficiency.

• Smart Ventilation, Any Weather
  The inward-tilting sash allows fresh air to enter while keeping rain out and maintaining security—ideal for urban environments or climates with frequent precipitation.

• Effortless Maintenance
  The sash can be tilted fully inward from inside the room, enabling safe and easy cleaning of the exterior glass surface—no ladders or external access required.

Conclusion

Designed for discerning architects, builders, and homeowners, this upper/lower hung window system combines precision engineering with minimalist design. It’s not just a window—it’s a long-term investment in comfort, performance, and timeless style.