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
Standard Clayson Hardware for Glass Sash、Standard Clayson Handles
Standard Haijun Hardware for Screen Sash、Standard Haijun Handles
Hobo Internal External Opening Hinges、Standard Drop Device
Visible Surface
Frame:25mm Sash:Steering frame:21.3mm Screen:36mm Glass Sash Hidden
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 Features
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 Frame and Sash Stile Design, Frame Visible Surface 25mm, Sash Visible Surface 52mm, Frame and Sash Flush Structure

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

Screw and Glue Corner Assembly Process, More Stable and Durable Sash Corners, Greatly Improved Sealing, Stronger Water-tightness and Wind Pressure Resistance

Vertical Isothermal Line Structure Design, Reduces Heat Loss, Excellent Overall Thermal Insulation Performance, More Energy-saving and Eco-friendly

Frame and Sash with 54mm Ultra-wide Thermal Break Strip, Conversion Frame and Glass Sash with 30mm Wide Double-wing Thermal Break Strip

Standard Integrated Multi-point Lock Diamond Mesh Screen, Screen Can Be Configured with High-transparency Diamond Mesh or Fiberglass Mesh, Multiple Options for Different Use Environments, Mosquito-proof and Durable

Automotive-grade EPDM Foam Sealing Strips, Composite Pressure-equalizing Strips, Super Strong Sealing Performance

Using 6063-T5 Primary Aluminum, Frame and Sash Aluminum All Primary Aluminum, Quality Guaranteed, Durable