Product Features

Wider 55mm Frame with Enhanced Structural Performance
The 55mm multi-chamber profile system delivers superior wind load resistance and thermal efficiency, providing a more robust foundation for large vertical folding panels.

Classic American Vertical Folding Design
Multiple panels fold upward like an accordion and stack neatly at the top, creating a fully open aperture while maintaining traditional American symmetrical proportions and clean sightlines.

Effortless Counterbalance Lifting System
Precision spring or gas-strut assist counteracts the panel weight, allowing smooth one-hand operation to raise or lower the folding stack to any desired height with secure positioning.

Superior All-Weather Sealing
Multi-point compression seals between each folding panel and around the frame perimeter provide excellent airtightness, water resistance, and sound insulation, ensuring comfort in any climate.

Maximized Glass Area for Unobstructed Views
Slim vertical and horizontal frame members maximize glass panels, flooding interiors with natural light and delivering expansive, uninterrupted views of the outdoors.