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AS-20 Sliding Doors | Ultra-Slim Aluminium Review
AS-20 Sliding Doors – Ultra-Slim, Secure and Built for Modern Homes
Slimline sliding doors are one of the most sought-after features in contemporary homes, creating light-filled spaces with seamless views and easy access to the garden.
The AS-20 sliding door delivers everything you’d expect from a premium slimline system: ultra-slim 20mm sightlines, smooth sliding action, and excellent thermal efficiency — all wrapped up in a beautifully engineered aluminium design.
Why Choose AS-20 Sliding Doors?
The AS-20 is based on the UK’s best selling and most tried and tested sliding door system. But unlike our manufacturing partner has re-engineered the product to make it even better than standard. This re-engineering and enhancement promises you the look and performance usually associated with high-end bonded systems, but without the complications or costs. It’s a system that combines beauty, practicality, unique features and reassurance in one.
Key benefits include:
· Ultra-slim 20mm central mullion – maximise glass, minimise frame.
· Impressive thermal performance – U-values as low as 1.1 W/m²K with high-performance glazing.
· Large glass panels – up to 2.5m wide and 3m high per sash.
· Smooth, near-silent sliding – thanks to heavy-duty stainless steel rollers.
· Flexible layouts – two, three or four panels, with corner designs available.
· Secure by design – tested to PAS 24 security standards.
· Optional soft-close system – family-friendly, preventing slamming and prolonging the life of the door.
Your new AS-20 sliding doors come with fixed or open corner designs as well as the low or recessed track. So, your internal flooring and exterior slabs or decking runs uninterrupted. It is also ideal for wheelchair users looking for accessibility without the stepover or standard tracks.
Colour options are extensive, from popular greys and blacks to textured powder coatings and dual colour finishes for bespoke projects. And we can enhance your doors with glass upgrades such as enhanced security laminated glass, acoustic glass for city or busy town environment and solar control glazing for south Elevations.
Beautiful Styling With Everyday Practicality
Optional Soft-Close Facility
Rare amongst sliding doors is the optional soft-close facility, another standout feature. It prevents panels from slamming shut, making the doors safer for children and ensuring the system operates gently and reliably for years to come with less stress and strain on the closing edge of the doors.
The AS-20 has been designed not just to look stunning, but to perform beautifully in everyday life:
· Slim frames all around for a balanced, elegant appearance.
· A wide choice of handle designs, including architectural-quality options in a range of finishes.
· Over 200 RAL colours, textured coatings, and dual-colour options to suit any home style.
· A smooth gliding action that feels effortless, even with large panels.
A Sliding Door That Lasts
Constructed from premium-grade aluminium and finished with durable, low-maintenance powder coating, the AS-20 is designed for longevity. The build quality, precision engineering, and attention to detail ensure that this is a sliding door that doesn’t just impress on installation day but continues to perform year after year.
The AS-20 is also future-friendly. If glass ever needs replacing, it can be done easily and quickly without complicated procedures. That’s peace of mind for you and reassurance that your investment is protected long-term.
Why We Recommend the AS-20 Sliding Door For Your Home.
At Fenestration Studio, we select only products that combine outstanding design with reliable long-term performance. The AS-20 sliding door is one of the best slimline systems available today. It brings together modern styling, practical features, and the peace of mind that comes from choosing a carefully engineered product.
There are many slimline sliding door manufacturers in the UK. We work with one of the most respected, known nationwide for enhanced hardware, flawless build quality and attention to detail. We promise you a superb new sliding door in your home.
Even better, our suppliers are stable and established businesses. As a result, we can respond to any issues with your doors, even out of warranty, promptly and efficiently. From working drawings, to colour references, actual glass sizes, panel manufacturing sizes and more. Every detail of your new sliding doors is retained so we can support your investment long into the future.
The Fenestration Studio White Glove Service
Choosing a sliding door is a major decision for your home, and we’re here to make it simple and stress-free. Our White Glove Service means every stage is handled with care — from helping you choose the right specification, to surveying, installation, and aftercare.
With Fenestration Studio, you benefit from national expertise and local support, ensuring your doors are fitted to the highest standard, fully compliant, and supported long after installation.
If you’re considering slimline sliding doors, get in touch with Fenestration Studio today to find out more about the AS-20 and experience our White Glove Service for yourself.
WHICH REGIONS DO WE COVER?
The Fenestration Studio are Nationwide Supply and Installation experts in:
Bi Folding Doors/ Sliding Doors/ Entrance Doors/ Windows/ Garden Studios, Glass Balustrades, Orangeries.
Our teams have over 35 years experience supplying and installing quality Glazing products across the UK. We have teams of Surveyors, Installers and Technical Experts close to you to help guide you through your project.
We cover all regions on this map with our professional and highly skilled , local surveyors and installers.
020 341 10038 - South
01768 254552 - Rest of UK