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The iSteel SLIM Internal glazed steel door and screen system was developed to offer an innovative alternative to the widely used W20 profile.

iSteel’s SLIM profile has a similar overall aesthetic at first glance but upon closer inspection is a more refined, sharp and contemporary product for a discerning clientele that are looking for an elegant modern day classic.

The beauty of an iSteel product is it’s versatility! Depending on your design requirements, SLIM can be styled to appear minimalistic, art deco, Georgian, industrial and historical.

Our projects range from city centre appartments to stately homes, country cottages, restraunts, offices and more – which speaks volume for the quality of our product, the talents of our designers and
artisan fabricators.



iSteel SLIM

iSteel’s SLIM steel glazing system was intentionally developed to address what we feel are W20 design compromises. Our outer frame measures 20mm and cross bar details 15mm which creates a light and elegant look, beautifully framing the glass without overpowering it.

SLIM is intentionally contemporary, engineered to appear light, crisp and clean – not intended to be a direct comparison to W20, iSteel is a modern looking Steel and Glazing alternative where there is a lack of it.

Not only does SLIM look incredible but the build quality, materials used and customer service that is associated with it are second to none.




Traditionally internal steel framed glazing has used a W20 system
with the slimmest option available having an overall outer frame depth of 43mm utilising a ‘T’ shaped profile. Another characteristic
of W20 is the cross bar detail which is almost 30mm and can become overtly domineering, detracting from the lightness of the glass.

W20 has its place in the market and is suitable for ‘purists’ and
those wishing to achieve an historical look, but when compared
to iSteel SLIM has larger sightlines and a complicated construction, ultimately compromising the aesthetic.


iSteel design, fabricate and install hand crafted screens and doors to custom specifications. Glass options include clear, reeded and frosted. Handle choice range from traditional to contemporary and colour options are endless.

Domestic, Surrey

Domestic, Surrey Exclusive clients with exquisite homes want extraordinary doors! When only the best will do, choose iSteel. iSteel ‘Slim’and ‘FireRated’ E30 Integrity Only 100% Real Steel Clear Toughened  and Fire Safety Glass 180 Degree Hinges Sliding rail Lever...

Domestic, Ettington

Domestic, Ettington Adding iSteel’s delicate ‘Slim’ steel and glass screen with doors into your interior will maintain the light airy feel of open plan living but create a focal point, buffer sound and define zones. SPECIFICATION   iSteel ‘Slim’ Internal  ...

Domestic, Sunderland

Domestic, Sunderland New Year, New House Vibe! The great thing about iSteel’s ‘Slim’ steel and glass doors is that they can be styled to be sleek and modern or beautifully traditional to complement your homes character. Speak to one of our designers today to learn how...

Domestic, Didsbury

Domestic, Didsbury Deck the Halls! Another Christmas wish come true for our Didsbury client. iSteel 30 minutes Fire Rated doors were chosen in our increasingly popular ‘Blenheim’ design and WOW, don’t they look fantastic teamed with this imaginative interior!...

Domestic, Prestbury

Domestic, Prestbury Tis the season to be jolly! All our Prestbury client wanted for Christmas was iSteel Fire Rated doors. Doors in, looking fantastic. Christmas tree up looking fabulous. A very merry Christmas indeed! SPECIFICATION iSteel ‘FireRated’ E30 Integrity...

Domestic, Sheffield

Domestic, Sheffield Sheffield based client, was having a bespoke kitchen installed in here luxurious farm house and had her heart set on a glass and steel pantry. Luckily she stumbled across iSteel and we were more than happy to make her creative ideas a reality. It...

Domestic, Nottingham

Domestic, Nottingham Under Stairs Storage Ideas. Every inch counts when it comes to clever storage solutions, and while you’re being clever why not make it a stylish feature? Nottingham based client did just that, building an under stairs wine room and...

Domestic, Otley

Domestic, Otley Light and Breezy. Otley based client wanted to replace existing internal timber doors for glazed steel to allow light to bounce around the house and create a feeling of space. One of the structural openings was too big for a single door but too small...

Domestic, Sheffield

Domestic, Sheffield iSteel’s FireRated E30 fully tested and certified system offers 30 minutes protection from flames and was specifically developed to match our internal doors, so if you need a mixture of fire rated and non-fire rated doors you no longer have to...

Domestic, Liverpool

Domestic, Liverpool Liverpool client had approached multiple providers before finding iSteel and encountered problems such as aluminium external doors pretending to be steel internal, a promise of a quote that never arrived and surveyors that didn’t have a tape...

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Feel free to give us a call if you would like to discuss our products in detail on 0330 1331 069.