Atlas Building Technology is proud to unveil the W123OUS / W128OUS casement window series — a system engineered for tropical and temperate climates where insect protection, security, and minimalist aesthetics must coexist.
The W123OUS solves a problem that has long challenged architects: how to integrate a fly screen into a slim-frame casement window without visual clutter. Atlas answers with a flush frame-sash design that conceals the SS316 anti-shearing diamond mesh within the profile itself. The result is sleek sightlines, maximum glass area, and multi-functionality in a single unit.
"We didn't want the screen to look like an afterthought," says our product development team. "It had to feel like part of the architecture."
Performance has not been sacrificed for aesthetics. The W123OUS achieves U ≥ 2.3 W/(m²·K) thermal insulation, 35 dB acoustic reduction, and EU RC2 burglar resistance. The clamping locking system and Bucalu's patented anti-falling engineering ensure that the window remains secure even with the integrated screen sash open inwards for cleaning.
Key specifications include a 0.5 mm mesh thickness, maximum vent dimensions of 1,200 mm × 1,800 mm, and a total basic depth of 123/128 mm. Wind resistance is rated to ≤ 5.0 KPa, with water tightness of 1,000 Pa — making the system suitable for high-rise and coastal applications alike.
The inward-opening screen sash is a practical detail designed for real homes. Cleaning both sides of the glass and mesh is possible from the interior, eliminating the need for external access or scaffolding.
The W123OUS Integrated Screen Window is now available through Atlas certified partners in 20+ countries. For project specifications, sample requests, or tailored quotations, contact our team.
