GS20 Classic
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GS20 Classic
With its popular and desirable 20mm central sightline, GS20 slimline sliding doors are precision-crafted for residential or commercial projects, new build or existing openings and supplied nationwide.
20mm interlock
Standard or Flush Stacking
Two to six sashes
Get your quote:
mm x mm
1. Width: Measure horizontally across the opening from edge to edge at the top, middle, and bottom. Use the smallest measurement.
2. Height: Measure vertically from top to bottom on the left, center, and right sides. Use the smallest measurement.
2 pane
1. Width: Measure horizontally across the opening from edge to edge at the top, middle, and bottom. Use the smallest measurement.
2. Height: Measure vertically from top to bottom on the left, center, and right sides. Use the smallest measurement.
Grey
1. Width: Measure horizontally across the opening from edge to edge at the top, middle, and bottom. Use the smallest measurement.
2. Height: Measure vertically from top to bottom on the left, center, and right sides. Use the smallest measurement.
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Overview
Perfect for existing or new build projects
GS20 is designed as an ultra slim replacement for dated sliding doors or promising spectacular sliding doors to a new extension or home, with all the desirable features expected from a cutting-edge sliding door.
Up to Six Sashes Available
From two up to six sliding panels, including fixed and open corner designs, GS20 sliding doors work with standard or bespoke openings, with options for all panels to slide, flush tracks and for residential or commercial projects.
20mm Sightline
With the favourite 20mm central sightline, GS20 sliding doors promise reduced mullions sighlines, maximum use of glass and an elegant, seamless apperance in any room.
Exclusive Flush Stacking Design
Unique to our sliding doors is the flush stacking facility. Doors stack neatly together when open, they look better and give you more of your available opening.
High-Performance Glass
GS20 sliding doors come glazed with the highest quality glass units up to 30mm double glazed, with options for enhanced security, solar control or acoustic glass, filtering up to 41db of noise and keeping internal spaces quiet as well as comfortable.
Effortless Operation
With upgraded rollers, hardware and components as standard, GS20 doors deliver an exceptionally smooth and near-silent sliding action. Effortless opening, even at large door sizes.
Premium-grade materials, advanced manufacturing
The exceptional design and engineering of GS20 sliding doors starts with premium-grade aluminium, coloured with a professionally applied colour powder coated, anodised or special finish.
Made in our advanced factory, with quality checks across every stage of the manufacturing process, GS20 sliding doors are meticulously crafted with a luxurious look, feel and quality that’s instantly visible.
Stunning Design Slimline Sliding Patio Doors
The GS20 Sliding Door delivers a new level of contemporary performance, combining slim sightlines with a refined, architectural presence. Engineered for modern and luxury spaces, its sleek profile and elegant proportions complement both contemporary and traditional designs.
Maximising light and space, the GS20 features large glass panels that create bright, open interiors and seamless indoor-outdoor living. Suitable for residential and commercial projects, the GS20 offers a perfect balance of design, performance, and versatility—making it a standout feature in any setting.
GS20 Sliding Doors - Ultra-slim, high-performance, built to impress.
The GS20 Sliding Door is designed to meet the highest expectations in today's property renovaiton and building projects, with masses of homeowner and architect appeal. Slim frames and expansive glass panels fill spaces with natural light. Fully bespoke and available as fixed or open corner or pocket sliding doors. Flush tracks, impressive weather protection, security and insulation, make them ideal for homes or light commercial buildings.
Exclusive to Glideline and crafted in the UK, GS20 delivers the clean lines, performance, and visual impact that today’s projects and customers demand. Get in touch with our team today.
Options
Handle colours
Technical specifications
Design & opening
- Opening style
- Sliding
- Glazing method
- Bonded glazing
- Sightline / joint
- 20 mm interlock
- Track options
- Up to 4
- Flush stacking
- Yes
- Flush threshold
- Yes
- Concealed perimeter frame
- Yes
- Open / frameless corner
- Yes
- Pocket configuration
- Yes
- Motorised option
- No
Size & glass
- Panel / sash width
- 800–2,500 mm
- Panel / sash height
- Up to 3,000 mm
- Panel / sash weight
- Up to 320 kg
- Glazing thickness
- Up to 30 mm
Performance
- Thermal performance (W/m²K)
- From 1.3 W/m²K
- Acoustic insulation
- Up to 41 dB
- Air permeability
- Class 4 (600 Pa)
- Water tightness
- Class 7A (300 Pa)
- Wind resistance
- Class C5 (2,000 Pa)
- PAS 24 security
- Yes
- Published reference test
- See product page for reference test configuration
Quality assured BSI Kitemark Standards
Thermally broken
*Reference test Balcony 1.23 x 1.55m. 1 sash + 1 fixed light.
Colour Finishes
Available from Glideline
Powder Coating RAL Finish
Standard 7016M and 9005M, 9016G
Available in 150+ RAL finishes
Textured finish available
Split colour for interior/exterior
Anodized aluminium
Class 15; 15-19 micrometer coating for external use as standard
Class 20; 20-24 micrometer coating for use in aggressive conditions, industrial areas and marine pollution
Silver brushed, silver rough brushed, bright silver, matte silver, brushed steel, rough brushed steel, brushed champagne re-polished, bright gold, rough brushed inox re-polished, brushed stainless steel, rough brushed ivory re-polished, brushed bronze, rough brushed bronze and re-polished, rough brushed copper re-polished, rough brushed Bordeaux re-polished, rough brushed green, rough brushed blue re-polished, rough brushed grey re-polished, matte black
Reviews
Glideline installed 6 sets of sliding doors in our house. This was a major investment for us so we wanted it to be just right. David and all the team were friendly and helpful from start to finish. Henry was great.
Thank you to the installers Joe and Luke for their hard work. It wasn't easy going up all the stairs but they were happy doing so and I couldn't be happier with the doors. Also Henry has been fantastic from sta…
Compare before specifying
Place GS20 within the complete slimline range
Use the topic hubs to compare sightlines, glazing methods and project examples around this product.
FAQs
What’s the maximum weight?
Our aluminium patio sliding doors can handle weights up to 320 Kg, which allows for wide door spans for your trade project. This enables several configuration options for homeowners, as well as our trade customers.
How thermally efficient are they?
These slimline sliding patio doors have U-values as low as 1.3 W/m²K, contributing to the energy efficiency of homes. This helps ensure bills are at their lowest possible value.
Do they work in traditional homes?
Slimline sliding patio doors have a minimalist profile as well as a timeless design. These aluminium doors will work perfectly in modern or traditional homes as a result.
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