
The PO128 is a premium parallel opening window system engineered with a 128mm basic profile depth, designed to provide exceptional thermal performance and seamless architectural integration. Its unique parallel opening mechanism allows the sash to project outward uniformly, creating a wide, unobstructed ventilation gap while maintaining the window's clean exterior profile.
Ideal for high-rise residential, commercial towers, and contemporary façades, the PO128 delivers controlled natural ventilation with enhanced safety, weather resistance, and a minimalist aesthetic. Available in a range of configurations to suit diverse design requirements.

Parallel Opening Mechanism: The sash projects outward in a parallel motion, creating consistent ventilation gaps without compromising the building's external appearance.
128mm System Depth: Deep-profile thermal break design delivers outstanding insulation values for energy-efficient building envelopes.
High-Rise Optimized: Engineered for superior windload resistance and structural stability, ideal for elevations above 50 metres.
Enhanced Security: Multi-point locking system integrated into the parallel opening hardware ensures robust resistance to forced entry even when ventilation is active.
Concealed Hardware Design: All operating mechanisms are hidden within the profile cavity, preserving the clean, uninterrupted lines of the façade.
| Parameter | Value |
|---|---|
| Thermal Insulation Uw | 1.4 W/m²K |
| Acoustic Insulation Rw | 42 dB |
| Airtightness | Class 4 |
| Watertightness | E1200 (9A) |
| Windload Resistance | Class C5 |
| Operating Force | < 50 N |
| Parameter | Value |
|---|---|
| Profile Depth | 128 mm |
| Wall Thickness | 1.8 - 2.0 mm |
| Minimum Mullion Width | 50 mm |
| Maximum Sash Width | 1200 mm |
| Maximum Sash Height | 2800 mm |
| Maximum Sash Weight | 100 kg |
| Glazing Thickness | 24 - 44 mm |
| Opening Gap | Up to 200 mm |