
Our Horizontal Sliding Medium Duty Serving Window can seamlessly integrate into the building facade or be housed within its dedicated booths. They can withstand a heavy amount of daily use and are the perfect solution for Receptions, Labs, Kitchens, Warehouses, and many more environments that would require interaction between two rooms.
Our Horizontal Single Sliding Medium Duty Serving Window exemplifies our superior window design, which is meticulously crafted to meet the diverse needs of our customers. Engineered with the highest level of precision, this window is perfectly suited for environments with moderate foot traffic, providing the durability and resilience required for continuous use.
Designed to withstand the demands of daily operation, the Medium Duty Serving Window combines functionality with robust construction. It is ideal for settings such as small businesses, schools, community centres and much more!
Available as just the window or with additional sections. These additional sections can be on any side of the window and be fully glazed or solid timber cores, covered over the top by acrylic panels or aluminium sheets.
Please see below our standardised manufacturing timescale. It’s important to note that these are listed as standard and usually we get these windows manufactured a lot quicker.
Expedited manufacturing is also available at additional costs if our workshop workload allows. If you’re looking for a quick turnaround, please get in touch with our team to find out more.
Standard White Serving Window: 4-6 Weeks
Powder Coated to Any RAL Colour: 6-8 Weeks
Our Aluminium Sliding Windows are carefully packaged in-house using heavy-duty commercial tape and multiple layers of protective bubble wrap to ensure they arrive in perfect condition.
We work with trusted, dedicated couriers who offer same-day or next-day delivery, all covered by liability insurance — providing peace of mind in the rare event of any transport-related damage.
For supply-only orders, we recommend providing clear delivery instructions in advance. Please ensure someone is on-site to receive the delivery to help avoid any potential issues or delays.
All our windows are quoted on a supply-only basis by default, unless installation has been specifically requested. Our experienced in-house engineers not only handle installations but are often directly involved in the fabrication process. This hands-on approach ensures seamless installations with minimal issues, as the same experts who build your windows also fit them.
If you prefer to handle the installation yourself, we’ve created a detailed step-by-step video guide to assist you — click here to watch it.

Discover the specifications of our Aluminium Medium Duty Sliding Window and the customisation options available!
Thermally Broken – A thermally broken frame features an insulated barrier between the interior and exterior materials, significantly reducing heat transfer. This enhances energy efficiency and helps maintain a consistent indoor temperature.
Double Glazing – Double glazing uses two panes of glass separated by a spacer to improve insulation, reduce noise, and enhance energy efficiency.
Multiple Configurations – Both panes slide by default, but you can also choose to have one sliding or opt for our Bi-Parting option.
Security & Locking – An extra layer of security has been added with the built-in lock handle, providing a hassle-free process for security.
Fully Customisable – All windows can be coloured any RAL colour or have additional handles, locks, and even integrated blinds within the glass. They can also come with additional panels on any side of the window — please specify for more info.

With our Horizontal Single Sliding Medium Duty Serving Window, you have the option to add additional panels to either side, offering enhanced flexibility in design and function. These panels can be fully glazed for a seamless look or constructed with solid timber cores. The timber panels can be finished with acrylic panels or aluminium sheets for added durability and a custom aesthetic.

Every Single Sliding Medium Duty Serving Window we fabricate is fully bespoke and made to order. We provide detailed, accurate drawings to ensure a perfect fit, tailored to your exact specifications and requirements. These drawings offer a clear visualisation of your window before production, ensuring that all measurements and design elements are precise, allowing for seamless installation and integration into your space.
Yes, all four sides of the window have draft sealing, enhancing smell and sound penetration.
Yes! Please ensure to specify that the window is external so that our fabricators know to drill drainage holes at no additional cost!
Yes, with two slam locks in either sliding pane, the window automatically locks in place when pushed shut.
No, the glass cannot be changed. It comes 28mm thick as standard however, you can change what the makeup of the glass is i.e. laminated or toughened.
Unfortunately, these exact windows that we fabricate in-house are not Fire Rated. However, we do have a European supplier who offers Fire Rated Serving Windows – so should you find your specification requires this, please specify and let us know so we can quote accordingly.
Please see below the maximum and minimum measurements that are available with our Bi-Parting Medium Duty Serving Window:
Minimum Width: 700mm
Maximum Width: 2000mm
Maximum Height: 1600mm
Check out our verified Google Reviews from our valued clients.
Trustindex verifies that the original source of the review is Google.
Not impressed to be honest…. Never turned up on first appointment, then when they did they were 2 hours late and had the wrong parts to repair my shop front.. wont be using again
Owner's reply
Hi, we’re sorry to read this review, however we’re unable to identify you as a customer of ours. We have checked our records and correspondence using the name on this review and cannot find any booking, appointment or communication relating to you or the circumstances described. We take customer service very seriously and would always want the opportunity to investigate a genuine complaint. If this review does relate to Contract Services Next Doors, please contact us directly with the site address and date of the appointment so that we can look into this. At present, we’re concerned that this review may have been left for the wrong company.Trustindex verifies that the original source of the review is Google.
Very efficient/professional job - filming all the glass in a dormitory. Many thanks. Croft Glass LtdTrustindex verifies that the original source of the review is Google.
Excellent service, professional and polite, Alice who I dealt with is most effecient and helpful all the way through the process. 100%Trustindex verifies that the original source of the review is Google.
Fantastic service from start to finish. The team was quick, efficient, and friendly, and they made the whole process very easy. The work was done to a high standard and without any hassle. Highly recommended!Trustindex verifies that the original source of the review is Google.
Found Next Doors Ltd through Google & they had excellent reviews so gave them a try, & they were excellent from start to finish. After sending them a few photo`s & short video of the door problem, Alice in the office gave me a quote with a minimum & maximum price including labour & travel, so we knew exactly how much the cost would be if the door needed any replacement parts. After a deposit was transferred, Next Doors Ltd emailed with a slot at 24 hours later for the works, & the engineer texted me in the morning with an ETA on site. The door had the necessary work done & the whole job was completed in 90 minutes. This is the second time we have used Next Doors Ltd, & now we have a properly functioning front door to our restaurant. We would definitely use Next Doors again, & also recommend them to anyone else, absolutely first class. Fino Restaurant Bognor Regis PO22 6AA.
Owner's reply
That’s very kind of you say Aldo, glad we could be of assistance it was a pleasure to have been able to help.
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