GLS Serving Window
GLS Serving Window
The GLS Serving Window creates a fully open connection between inside and out, ideal for kitchens, bars, or entertaining spaces. Designed for convenience, efficiency, and durability in the home or high traffic commercial settings.
Bifold, Sliding or Hinged
Secure and Thermally Efficient
Bespoke sizes and configurations
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.
Bifold
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.
Black
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
Fully Open Window Functionality
Open up the entire window area for uninterrupted views, airflow, and effortless service to outdoor spaces.
Three Smart Configurations
Choose from bifold, sliding, or gas strut formats to match the layout, space, and usage needs of your project.
Space-Saving Design
Each configuration is designed to fold, slide, or lift clear—freeing up internal counters or external walkways.
Customer Customisation
We’ll make your aluminium bifold doors to your exact specifications. By tailoring our concertina doors to your size, colour scheme, finish, and accessory requirements, we’ll provide a truly bespoke product.
Made to Measure for Any Project
Specify your preferred size, operation style, finish, and glazing—built to order for residential or commercial use.
Durable, Thermally Efficient Build
Supports double or triple glazing up to 44mm, with excellent thermal insulation and long-term weather resistance.
Bifold Serving Window
Using our tried and tested GB49 bifold door in a reduced size, our Serving Window is perfect in your home as a kitchen window, connected to an existing door or to extend the open plan next to your main bifold or sliding doors.
Perfect in commercial property such as cafés, bars, kitchens and anywhere serving access is required.
Sliding Serving Window
Glideline’s GLS Serving Window as a slider also transforms how spaces connect—perfect for creating an open servery between kitchens and outdoor areas, or between commercial counters and terraces.
Whether you’re hosting a summer barbecue or serving drinks from a bar, this solution makes interaction seamless and ventilation effortless.
Gas Strut Serving Windows
Our innovative Gas Strut version keeps the opening element securely held in place at the top, leaving the sides of your serving area clear and unobstucted by open panels.
This opening format creates a fully unobstructed window that standard casement or tilt-and-turn systems can’t match, helping you design spaces that feel brighter, bigger, and more sociable.
Technical specifications
Configurations
Bifold
Sliding
Gas
Sightlines
Bifold = 110mm
Sliding = As low as 15mm
Gas = As low as 20mm
Glazing
Min. 24 MM, Max. 44 MM
Maximum Sash Weight
120KG
Colour Finishes
Available from Glideline
Powder Coating RAL Finish
Standard 7016M and 9005M, 9016G
Available in 150+ RAL finishes
Textured finish available
Split color 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
Class 20; 20-24 micrometer coating for use in aggressive conditions, industrial 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 and marine pollution
Wood effect powder coating
Available in pine, oak, cherry wood, sapele, African walnut, walnut, chestnut and white wood
Reviews
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…
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…
FAQs
What’s the maximum glazing thickness?
With our serving windows, you can have a glazing thickness of as much as 44mm. This will help to provide the best levels of thermal efficiency and security for your customer’s home.
Will they suit traditional homes?
Serving windows are versatile in any application. They’ll look perfect in modern properties, but also traditional homes, with wood finishes giving them a more heritage aesthetic.
How weatherproof are they?
Through rigorous testing, we have ensured that our concertina doors are fully weather protected. They’ve been tested against air permeability, water tightness and wind resistance.
If we haven’t answered your question, Send us a message