Luolan S2 Thermal Break Casement Window

Traditional flush glazing beads can be vulnerable to external prying or edge seal degradation under severe storms. The stepped bead architecture introduces an interlocking interior barrier that applies continuous pressure across the perimeter gasket, locking the glass pane firmly into position to deter forced entry while stopping wind-driven rain from bypassing the glass edge.

The system supports outward swing casement, top-hung awning, and dual-function outward awning operations. In top-hung awning mode, the sash pushes outward from the bottom while the top stays anchored, acting as a natural aerodynamic canopy that vents stale indoor air continuously while shielding interior living spaces from falling rainwater.

Precision-engineered VBH multi-point locking mechanisms utilize heavy-duty friction stays, anti-wear drive gears, and corrosion-resistant linkages. This eliminates sash sagging over time, ensures silent, vibration-free sash travel, and pulls the frame evenly into perimeter gaskets for an airtight weather seal with every turn of the handle.

The wide 20mm air space between the twin 5mm tempered panes acts as a thermal and acoustic buffer, substantially decelerating sound wave velocity across mid- and high-frequency spectrums. In tandem with multi-layer continuous perimeter weatherseals, this configuration blocks urban traffic sounds, heavy downpours, and wind whistling to maintain a quiet indoor rating of 35dB to 37dB.