58BW ST HI – Steel Replacement

Geometry system

  • Depth: 58 & 70mm
  • Side hung max. weight: 24kg
  • Top hung max. weight: 40kg
  • Fixed light max weight: 200kg

Thermal performance

  • Uw (double glazing) 1.4W/m2K
  • Uw (triple glazing) 1.2 W/m2K
max

Maximum Glass Thickness  

  • 24mm-32mm

Acoustic Performance 

Interested in our products?

Description

Combining the timeless look of steel with the performance advantages of aluminium, our 58BW ST HI windows offer the perfect solution for both designers and homeowners. Engineered to exceptional build quality, they provide an ideal replacement for traditional steel windows.

Delivering outstanding thermal and acoustic performance, these windows faithfully replicate the slim sightlines of steel while offering enhanced security, durability, and efficiency—bringing together style and performance in one smart solution.

Flush Innovation

    • 58mm or 70mm frame depth to accommodate varying types of applications
    • Internally or externally glazed
    • Glazing 24mm – 32mm**
    • Available for Lifetime Homes (LFT)
    • Available in a range of single or dual colour and anodised finishes
    • Available in the following aesthetics: Putty Line, Stepped Edge, Square, Exterior Glazed Chamfer
    • Available in the following configurations: top hung, bottom hung, side hung, fixed light, and multilight.

    ** Glazing thickness: Other thicknesses may be possible dependant on profile combinations specified. Fabricators should refer to AluK technical manual glazing section for details.

  • Glazing options from 24mm to 40mm
  • Available in a wide range of single or dual colour and anodised finishes
  • Choice of aesthetics: Bay, Contemporary, and Square
  • Configurations include tilt-before-turn, side-hung, fixed light, and multi-light options
  • Suitable for Lifetime Homes (LTH) requirements

Cross-Section

TECHNICAL DATA:

Performances
U value W/m²K (Double glazing) :1.4 W/m²K
U value W/m²K (Triple glazing) :1.1 W/m²K
Window energy rating :A – B
BRE Green Guide rating :A rated
Air tightness (Pa) :Class 4 (600pa)
Water tightness (Pa) :Class E1500 (1500pa)
Security PAS 24 :
Certifications :
Secured by design :
Configurations
Opening :open out
Top hung :
Side hung :
Bottom hung :
Fixed Light :
Multi light :
Size limits
Top hung (max weight) :40kg
Side hung (max weight) :24kg
Bottom hung (max weight) :45kg
Fixed light (max weight) :250kg
Features
Frame depth :58mm & 70mm
Dual color option :
Multi-point locking :
Glazing options :Internal & External
Glazing thickness :24mm-32mm
Sightline (Frame to Vent) :66mm
Sightline (Vent to Mullion) :81mm
Sightline (Fixed Light) :43mm

 

Contact info