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Step-frame design creates height difference for smooth water drainage, prevents rainwater retention on window profile.
One-piece expansion corner bracket with 45-degree injected glue splicing delivers tight joints, enhancing corner stability and overall sealing performance.
Double sealing plus double waterproof structure blocks rain penetration effectively, improving the window's air tightness, water tightness and sound insulation.
90-degree rounded corner design for exterior glass gaskets achieves gap-free corner joints, resists water and dust buildup for easy daily cleaning.
Vertical isothermal structure optimizes heat retention, boosting the whole window's thermal insulation performance from the structural level.
| Items | R72I |
| Glass | Double Tempered Glass with Argon Gas 5mm+20A+5mm |
| Material | 6063-T5 |
| Thickness | 2.0mm |
| Frame Width | 72mm |
| Hardware | ROTO |
| Opening Method | Casement Inward/Outward |
| Mosquito Screen | Optional |







