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| Window frame thickness | 60mm, 70mm, 80mm, 108mm, 120mm |
| Glass Options | Double-layer insulating glass 5mm + 12A(15A, 20A, 22A) + 5mm; Triple-layer insulating glass 5mm + 9A + 5mm + 9A + 5mm; Laminated insulating options: (5mm + 0.76PVB + 5mm) + 12A + 5mm, etc. Low-E and Argon gas filling available. |
| Hardware | Germany Origin Made Brand SIEGENIA / ROTO / HOPPE Hardware & Accessories. |
| Window Frame Material | Plastic steel, broken bridge aluminum, wood-clad aluminum, aluminum-clad wood. |
| Open the Fan | Two fans |
| MOQ | Customized sizes less than 1.5 square meters will be charged based on 1.5 square meters. |






The measured width (W) and height (H) of the opening must be adjusted for the installation gap:
Installation Gap (Reserved Space):
Standard gap is usually 10mm-20mm per side. This space accommodates foam adhesive, leveling adjustments, and minor wall deformations.
Example Calculation:
If W = 1498mm, H = 1598mm, and a 15mm gap is required on each side:
• Width: 1498 - (15 * 2) = 1468mm
• Height: 1598 - (15 * 2) = 1568mm


