SM90 inward-opening casement window adopts European-standard 6060-T66 aluminum profiles and genuine thermal break strips. Built with a siphon-based equal-pressure chamber drainage system and triple-sealing structure, the system delivers excellent waterproofing, thermal insulation and structural rigidity for high-end residential villas, apartments and commercial building projects.
The combination of 39mm PA66-GF25 thermal break strips, precision sealing technology and flush frame-sash design provides reliable energy efficiency and modern architectural aesthetics.
Key Features
Equal-Pressure Drainage
Siphon-based equal-pressure chamber drainage with stepped concealed channels effectively reduces rainwater penetration and improves waterproof performance.
13.5° bevel co-extruded EPDM foam gaskets create a triple-sealing structure to improve air tightness and reduce heat loss.
Flush Frame-Sash Design
Interior-exterior coplanar frame-sash construction creates clean square-line aesthetics with optimized energy-saving performance.
Precision Corner Joint
High-precision corner keys with glue-guiding structures provide strong, smooth and durable corner assembly.
Condensation Protection
Special glass-insulation pads reduce condensation risks under low-temperature and high-humidity conditions.
Application
Technical Specifications
Parameter
Specification
Frame Depth
90 mm
Sash Depth
90 mm
Frame Visible Width
64 mm
Sash Visible Width
108 mm
Glazing Bead Visible Width
25 mm
Frame Thermal Break Strip
39 mm
Sash Thermal Break Strip
39 mm
Insulated Glass Option 1
5 mm+20A+5 mm Double‑glazed Unit
Insulated Glass Option 2
5 mm+12A+5 mm+12A+5 mm Triple‑glazed Unit
Performance Ratings
Performance ratings are based on China's national GB/T 7106 test method, with SM90 achieving Level 8 water tightness, Level 8 air permeability and Level 9 wind load resistance through its thermal break and sealing system.
WATER TIGHTNESS
Level 8
Level 8 on GB/T 7106 — resists wind-driven rain infiltration under standard test pressure.
AIR PERMEABILITY
Level 8
Level 8 on GB/T 7106 — limits uncontrolled air leakage through the frame and sash.
WIND LOAD RESISTANCE
Level 9
Top grade (9) on GB/T 7106 — suitable for exposed elevations and demanding applications.
THERMAL INSULATION
Level 8
High thermal insulation performance based on selected frame and glazing configuration.
SOUND INSULATION
Level 3
Sound insulation performance rating for the selected glazing configuration.
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