HC81H Ultra-narrow Hidden Sash Inward Opening Window
Parameter Details
Profile Thickness
National Standard 6063-T5 High Precision Profile Local Wall Thickness 1.8mm
Drainage System
Hidden Drainage
Sealing Strip Process
Ternary EPDM/Composite EPDM Main Seal Full Frame Welding
Glass Standard
5G+12A+5G+12A+5G (Black Aluminum Spacer)
Hardware Handle
German Imported Roto Hardware/German Roto Bottomless Handle
Visible Surface
Frame: 18.5mm Sash: 43.5mm
Product Performance
Wind Resistance: Level 8
Air Tightness: Level 8
Water Tightness: Level 6
Sound Insulation: Level 3 (30-35db)
Thermal Insulation: Level 7 1.6≤K<2.0w/㎡·k
Product Selling Points
Ultra narrow hidden sash structure, flush frame design
Vertical isothermal line design, thermal insulation, energy saving
Bottom frame and middle transom adopt hidden drainage, independently developed dedicated drainage components, smooth drainage system
Frame and sash use maximum 30mm large thermal barrier strips, independently developed multi-cavity thermal barrier strips, low-carbon environmental protection
Triple automotive-grade ternary EPDM foam sealing strips, large cross-section composite compression sealing strips, ensuring air tightness and water tightness
Color scheme
Using"fifteen colors" to freeze moments in time and reshape home aesthetics. Drawing inspiration from traditional Chinese culture, we creatively designed the"Twelve Hours Color Spectrum", where each hour corresponds to different color emotions, using objects to carry the patina of time and memory, constructing an oriental aesthetic of temporal poetry through color transitions, perfectly matching various home styles.
UtilizingAkzoNobel metal powder coating technology, with its exceptional anti-corrosion and weather resistance properties, it becomes the preferred choice for high-end window and door profiles. The powder forms a velvety texture with butterfly-wing adhesion, whispering 15 colors in light and shadow, with every curved surface flowing with an anti-oxidation armor, tempering metal into soft satin. This solidified liquid aesthetic ultimately becomes an emotional vessel for dwellers.