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QUOTE CALCULATOR

AluLite Opening Window – Slimline Aluminium Heritage Design

The iSteel AluLite Single Opening Window combines sleek, super-slim aluminium sightlines with a heritage-style steel window look. Designed for both modern and traditional properties, it offers high thermal performance and enhanced security, making it ideal for homeowners, architects, and renovation projects such as listed buildings.

Perfectly balancing form and function, this window is bespoke-made to order, allowing customisation in colour, glass specifications, and crossbars to suit your unique style and performance needs.

Request a bespoke quote

Call: 0330 1331 069
Email: sales@isteel.co.uk
Visit: Unit B, Glaziers Yard, 15 Chambers Road, Platts Common Est, Barnsley S74 9SA

INSTANT QUOTE CALCULATOR

Slimline Heritage Design

The AluLite system replicates a classic steel window aesthetic with minimal sightlines, perfect for both traditional and contemporary homes.

Bespoke Options

Choose from a range of colours, handle styles, and glazing options to create a tailor-made solution.

Energy Efficient

Thermally broken design keeps your home warm, reducing heat loss and energy consumption with a U-Value of 1.6 W/m²K.

Built for Security

The multi-point locking system, toughened glass, and robust aluminium frame provide enhanced security and durability.

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DOWNLOAD TECHNICAL SHEET
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COLOUR OPTIONS

Available in Black, White, Anthracite Grey and a wide range of bespoke colours.

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Matt White RAL9003

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Matt Black RAL9005

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Matt Anthracite RAL7016

PERFECT FOR:

  • Listed building renovations
  • Luxury home installations
  • Architect-designed projects requiring steel-look windows
  • iSteel AluLite is available as fixed window
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FRAME & LEAF
  • 48mm outer frame, 49mm leaf, 73mm total sightline.
THERMAL PERFORMANCE
  • Thermally broken aluminium construction with a U-Value of 1.6 W/m²K.
GLASS
  • 28mm Argon-filled double glazing with Low-E coating, offering superior insulation (Glazing U-Value: 1.2)
DESIGN FLEXIBILITY
  • 40mm face-applied transoms and mullions with colour-matched intra-spacer bars for a seamless, heritage-style appearance.
COLOUR

Standard colours including Black, White and Anthracite Grey but most colours are possible.

USE

This product is for external use only.

ISTEEL ALULITE

Featuring a super slim frame

Crafted in the UK using the highest-grade aluminium, iSteel AluLite delivers unmatched performance with a sleek, slimline design.

Whether you’re working on a contemporary new build or a heritage restoration, the AluLite system offers a perfect blend of aesthetics and efficiency.

Harold Newsome, Leeds

Domestic, Altrincham

Domestic, Harrogate

Domestic, Sheffield

Domestic, Nottinghamshire

Commercial, Hull

Domestic, Leicestershire

servicing zones

Zone 1: Lancaster, Ripon, York, Leeds, Wakefield, Sheffield, Hull, Manchester, Liverpool, Chester, Lincoln, Nottingham, Derby, Leicester and surroundings.

Zone 2: Carlisle, Newcastle, Durham, Birmingham, Coventry, Peterborough, Cambridge, Ely, Worcester, Gloucester, Hereford, Bangor and surroundings.

Zone 3: Swansea, Cardiff, Bristol, Salisbury, Winchester, Oxford, London, Clemsford, Norwich, Wells and surroundings.

Zone 4: Glasgow, Edinburgh, Stirling, Perth, Dundee, St Davids, Plymouth, Exeter, Southhampton, Portsmouth, Brighton, Canterbury and surroundings.

isteel servicing zones

Why choose bespoke iSteel

Please call us directly or email us at the address below if you require any assistance.

Design

iSteel have our own dedicated design team that will work with you to create the perfect design solution, tailored to your bespoke requirements.

Installation

Watch a video of a typical installation here

Warranty

All iSteel products have a 12-month warranty for mechanisms and a factory warranty for components. The warranty does not cover damage caused by negligent operation or deliberate damage.

Order Process

Ordering from iSteel is simple, send us your enquiry and our sales team will guide you through the process. For more information, please visit our order process page.