Stylish Design Double Hung Window High Security For Historical Building Restoration

We are committed to redefining the functional boundaries of double-hung windows within non-thermal break architecture. The 100 Series Non-Thermal Break Double-Hung Window System provides a classic vertical sliding solution that meets modern performance requirements for historical building restoration, residential spaces in temperate climates, and projects requiring traditional window aesthetics, through an improved vertical balance mechanism and integrated profile design. The system utilizes single-chamber monolithic extruded aluminum profiles, with the load-bearing track areas reinforced to a wall thickness of 2.8mm, combined with a concealed counterweight system. While fully preserving the integrity of the non-thermal break structure, it achieves stable vertical sliding for single sash weights up to 40kg and retains operational precision after 150,000 cycle tests.

The core technological breakthrough lies in the dual-track independent balancing system: each movable sash is equipped with a dynamic balancing device consisting of stainless steel cables and polymer counterweights, enabling millimeter-level positioning accuracy and suspension at any height; the sealing system employs an adjustable pressure step-seal design, maintaining four continuous sealing interfaces throughout the sash's vertical movement; the muntin structure integrates internal reinforcements with external decorative lines, preserving the visual proportions of traditional double-hung windows while enhancing wind pressure resistance to meet national standard Class 6. We provide comprehensive modernization solutions for traditional window styles, including single-point controlled tilt cleaning functionality, built-in removable insect screens, and original-color anodized surface treatments suitable for historical buildings, with custom adaptation capabilities for existing window dimensions.

Choosing the 100 Series Non-Thermal Break Double-Hung Window System represents a contemporary technical response to architectural historical context. By combining mechanical precision with material continuity, it achieves symbiosis between traditional window aesthetics and modern performance parameters in heritage buildings, style residences, and high-end retro projects that require preservation of original appearance while improving airtightness and operational comfort. Leveraging the complete metal characteristics of the zero-thermal-bridge structure, the system ensures maintenance-free operation for over twenty-five years.