Double Casement Window WE 70

The TOSTEM WE 70 double casement window is developed on Japanese technology platforms, achieving a perfect balance between aesthetic appeal, operational efficiency, and long-term durability. With its versatile design, the product suits a variety of building types—from private residences and high-rise apartments to commercial spaces—elevating modern and comfortable living experiences.

Robust structure – Optimal water penetration prevention

The window features a 72 mm frame depth, creating a sturdy structure with exceptional load-bearing capacity. The bottom frame integrates a specialized drainage system that blocks rainwater infiltration, keeping interior spaces safe and dry even under harsh weather conditions.

Synchronized hardware – Safe and convenient operation

The window comes equipped with easy-to-use ergonomic handles and high-quality safety lock mechanisms. The adjustable exterior panel latch enhances seal tightness and security. All synchronized hardware components from TOSTEM ensure exact compatibility and extended service life.

Sleek design – Maximize views and spatial openness

The product can integrate seamlessly with fixed glass transoms without horizontal mullions, expanding unobstructed views and introducing open airiness to space. Additionally, an interior-mounted sliding insect screen maintains design aesthetics while adding daily functionality.

Comprehensive performance – Air tightness, sound insulation, and wind resistance

The WE 70 double casement window meets JIS inspection standards, boasting a wind pressure resistance of S-1 (800 Pa), water tightness of W-2 (150 Pa), air tightness of A-3, and sound insulation up to 25 dB. These performance ratings ensure a quiet, private, and secure environment, perfectly suited for urban settings or luxury resorts.

International-standard technical specifications

The frame depth reaches 72 mm, bottom frame height measures 35 mm, and supported glass thickness ranges from 5 mm, 6 mm, to 8 mm. Manufactured flexibly to fit actual project measurements, the product complies with rigorous JIS testing standards to guarantee stable performance across diverse environmental conditions.

An optimal choice for modern projects

Featuring a refined design, synchronized hardware, and fully certified performance ratings, the WE 70 double casement window serves as the perfect solution for architectural projects that prioritize both utility and design aesthetics.