AluK Optio 58BW ST HI Steel Replacement

Minimal, durable, secure.

The look of steel, the benefits of aluminium. A win-win for designers and homeowners alike. Featuring industry leading build quality, our 58BW ST HI 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.

Features
Downloads
Technical Information
Opening Options

Design features

Certified under the Secured By Design scheme
Tested to PAS 24
Green guide rated A
Integrated deep head profiles for ease of trickle ventilation
Unique polyamide thermal break design to improve thermal performance

Options

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.}

* Sections provided are typical examples of this window system, there are many options available, for details of the exact sections used in your quote, please request the CAD detail from us when discussing your quote.

Properties

U value W/m²K (Double glazing)

1.5 W/m²K

U value W/m²K (Triple glazing)

1.2 W/m²K

BRE Green Guide rating

A Rated

Certifications

Q-mark

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

Frame depth

58mm and 70mm

Dual colour option

Yes

Multi-point locking

Yes

Glazing options

Internal and external

Glazing thickness

25mm – 28mm**

Sightline (Frame to Vent)

66mm

Sightline (Vent to Mullion)

81mm

Sightline (Fixed Light)

43mm

Performance

Comfort

Safety

Energy

The technical information shown above is based on typical tests, the size of the windows, glass choice and profile choice can all affect the achieved rating, please ask us if you are unsure what your actual windows achieve, we are able to provide a variety of reports.

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