HC81H Ultra-narrow Hidden Sash Inward Opening Window
Parameter Details
Profile wall thickness
National standard 6063-T5 high-precision profile Local wall thickness 1.8mm
Drainage system
Hidden drainage
Seal strip technology
EPDM/composite EPDM main seal whole frame welding
Glass standard
5G+20A+5G(black aluminum spacer)
Hardware
Glass door hardware: German imported Leizhe hardware
Screen window hardware: Haijun
German Leizhe baseless handle
Visible surface
Frame:18.5mm Fan:43.5mm
Product performance
Wind resistance: Class 8
Air tightness: Class 8
Water tightness: Class 6
Sound insulation: Class 3(30-35db)
Thermal insulation: Class 7 1.6≤K<2.0w/㎡.k
Product selling points
Extremely narrow hidden sash structure, double inner opening structure, frame and sash flush design
Multi-point lock for sash + special hinge configuration
The sash can be configured with high-transparency diamond mesh or high-transparency fiberglass mesh
The lower frame and middle horizontal frame use hidden drainage, and the special drainage parts are independently developed, and the drainage system is unobstructed
Three automotive-grade EPDM foaming sealing strips and large-section composite isobaric strips ensure air tightness and water tightness
Color scheme
Use "fifteen kinds" of colors to solidify time and space slices and reshape the aesthetics of home. Inspired by traditional Chinese culture, the creative "Twelve Hours Chromatography" is created. Each hour corresponds to a different color emotion. The objects carry the patina of time and memory, and the time poetics of oriental aesthetics is constructed in the flow of hues, perfectly matching the different styles of home.
Using Aksu metal powder spraying technology, it has become the first choice for high-end door and window profiles with its excellent anti-corrosion and weather-resistant performance. The powder condenses into a velvet texture with butterfly wing adhesion, and 15 colors whisper between light and shadow. Each arc surface flows with anti-oxidation armor, which refines the metal into warm silk. The solidified liquid aesthetics eventually becomes the emotional container of the residents.
Optional Colors
Application Scenario Diagram
Product Selling Points

Ultra-narrow Hidden Sash Structure, Double Inward-opening Structure, Frame and Sash Flush Design

Screen Sash Multi-point Lock + Special Hinge Configuration, Screen Can Be Configured with High-transparency Diamond Mesh or High-transparency Fiberglass Mesh

Lower Frame and Middle Horizontal Frame with Hidden Drainage, Self-developed Special Drainage Parts, Smooth Drainage System

Triple Automotive-grade EPDM Foam Sealing Strips, Large Cross-section Composite Pressure-equalizing Strips, Ensure Air-tightness and Water-tightness

Screw and Glue Corner Bracket, Sash Corners Have Stronger Stability, Sealing and Water-tightness