6063-T5 aerospace-grade aluminum, multi-chamber structure

Profile wall thickness: 2.0mm

Frosted injection corner codes for secure and stable connection

One-piece bent hollow aluminum strip for enhanced sealing performance

Outer frame thickness: 120mm

Inner sash thickness: 81mm

Visible interior sash width: 60mm

Type II thermal insulation for improved efficiency and strength

Fully wrapped EPDM rubber seals

5+18A+5 original XinYi glass

European standard groove hardware system

304 stainless steel screen mesh, 0.8mm thick wire

Enhanced safety and aesthetics guardrail (fixed or openable options available)

Injection sealing / No internal or external caulking required

Hollow layer filled with moisture-proof molecular sieve

Isothermal alignment design

12-chamber design in opening frame

Triple sealing on outer frame for superior sound and thermal insulation

11-chamber outer frame design