Transform Your Home with the GS20 Slimline Aluminium Door

Nov 7 2025

We’re very excited to announce that Swadlincote Windows is now an approved Glideline installer. We're offering the stunning GS20 slimline aluminium door, the perfect addition to any property.

Designed to combine luxury design, energy efficiency, and long-term durability, the GS20 slim profile sliding doors are precision-crafted. Moreover, they're suitable for both residential and commercial projects.

What is the GS20 Sliding Door?

The GS20 is a premium aluminium sliding door and is beneficial for anyone looking to replace older, dated sliding doors. Alternatively, if you've recently had an extension this would be the perfect choice for a contemporary look. These slim aluminium sliding doors deliver all the desirable features from cutting-edge glazed doors. Including slim sightlines, smooth operation, and impressive energy efficiency.

In addition, they are available in configurations from two up to six sliding panels, including fixed and open corner designs. The GS20 slim profile sliding doors are suitable for both standard and bespoke openings. Furthermore, options include fully sliding panels and flush thresholds.

One of the standout features is the 20mm central sightline. This ultra-slim sightline maximises the amount of glass and allows for lots of natural light. In turn creating a seamless, uninterrupted view and a contemporary look that enhances any indoor or outdoor living space. Thanks to upgraded rollers, hardware, and components as standard, GS20 slimline aluminium door offers a smooth and near-silent sliding action. Meaning its effortless to open, even at large door sizes.

Who is the GS20 Suitable For?

The GS20 aluminium sliding door is ideal for anyone seeking a slim profile sliding door. It combines a graceful design with outstanding performance. Residential homes or commercial properties are a perfect fit for the GS20 slimline aluminium door. Engineered for all spaces in mind, its slim profile and refined proportions add the finishing touch to both contemporary and traditional architecture. Additionally, the slim aluminium sliding doors maximise light and space, creating bright, open interiors and seamless indoor–outdoor living. Overall, its perfect for home renovations, extensions, or new builds. The GS20 sliding door offers a balance of design, performance, and versatility that makes it a standout feature in any setting.

What design options do I have?

The GS20 has many customisable design options. With features such as large bespoke panel sizes up to 2.5m wide and 3m high. Over 200 durable RAL colours including Anthracite Grey (7016) and Jet Black (9005) as well as dual colour options. It's also available in 2-track and 3-track and quad track configuration, as well as several glazing options including double and triple glazing, solar control and acoustic glass.

Our GS20 Installations

Take a look at some of our recent GS20 glazed door installations to see the results for yourself.

If you're considering updating your existing aluminium sliding door, we have a dedicated sales team who is here to help every step of your journey. Whether you want to improve your home’s aesthetics, security, or energy efficiency, we can provide expert advice and a personalised service tailored to your project.

Contact Us

In conclusion, If you’re planning a home renovation or extension, the GS20 slimline aluminium door could be the perfect finishing touch for your project.

Give our sales team a call on 01283 212222, email info@swadlincotewindows.com. Or visit to find out more www.swadlincotewindows.com/aluminium/gs20