The 58BW ST window system provides an ideal solution for the replacement of existing steel windows. The system is available in a range of styles and can be top, bottom or side hung to meet the needs of your project. The design replicates the narrow sight lines associated with steel windows whilst providing superior performance and security.
Get QuoteFeaturing industry leading build quality, our 58BW ST aluminium windows are an ideal replacement for existing steel windows. In addition to impressive high thermal and acoustic performance, the design also replicates the minimal sight lines associated with steel windows, whilst providing superior performance and security. Yet another win-win.
| U value W/m²K (Double glazing) | 1.4 W/m²K |
| U value W/m²K (Triple glazing) | 1.2 W/m²K |
| Window energy rating | A – B |
| BRE Green Guide rating | A Rated |
| Acoustic performance (dB) | Rw (C;Ctr) 43 (-2;-5) dB |
| Air tightness (Pa) | Class 4 (600 Pa) |
| Water tightness (Pa) | Class 9a (600 Pa) |
| Wind load (Pa) | Class E2400 (2400 Pa) |
| Security PAS 24 | |
| Certifications | Q-mark |
| Secured by design |
| Top hung (max weight) | 35 Kg |
| Side hung (max weight) | 24 Kg |
| Bottom hung (max weight) | 60 Kg (3 hinges) |
| Fixed light (max weight) | 250 Kg |
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