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| Window Sash | width: 60mm, thickness: 28mm |
| Suggested maximum size of single sash | 800*1500 |
| Glass Specification | 4mm+12A+4mm double tempered glass (smooth, frosted, coated or Low-E glass |
| Sliding Track | Two tracks: 2 glass sash, 4 glass sash Three rails: 2 glass sash with 1 flyscreen, 3 glass sashes, 4 glass with 2 flyscreen |
| Hardware | BOGO auto-lock |
| Wind pressure resistance Strength | Pa≥2500, class 4 |
| (a) Air permeability (air tightness) m3/m.h | (10 Pa) ≤ 1.5, class 6. |
| Water tightness (rainwater infiltration) | Pa ≥ 300, Class 3 |