Slim sliding door

Slim Line Sliding Doors – Features and Benefits

Slim line sliding doors, slim sliders, ultra-thin sliding doors, and frameless sliding doors are just some names used to describe the slimmest aluminium sliding doors on the market.

Characterised by their minimal sight lines throughout the visible system, and maximum glazed area. Slim sliding doors are a high-end solution, with fantastic aesthetic appeal, helping to provide the greatest view, opened or closed. The sleek design perfectly suits contemporary or modern properties. A very popular choice in both self-build and home renovation/new extension projects.

Here at Aspect Windows we offer the Ultraline Slim Sliding Door. A high-end slim sliding door, built around a clear vision ‘MORE OF A VIEW’.

Slim sliding door


Slim Sight Lines

The Ultraline sliding doors advanced design and engineering means that it can offer industry leading sight lines of just 20mm throughout the visible system. Making the door unrivaled in aesthetic appeal.

It is not only the interlock which offers the slim sight lines, the integrated handle which is incorporated into the sash profile, gives the door a unique 20mm sight line, even when opened, maintaining the minimal sight lines throughout the system. Delivering unobstructed views opened or closed.

Slim sliding door - sight lines

Security accreditations

The Ultraline slim sliding door is compliant to one of the worlds most stringent security tests – PAS 24:2016. A British regulation for enhanced security performance, tested by an independent body.

The door is also Part Q compliant – a security requirement for windows and doors within new build properties.


The Ultraline slim sliding doors allows for large apertures to be filled with minimal panels. The door is able to offer very large dimensions with maximum panel heights of 3200mm, or up to 9m2.

Single to quad track options allow for multiple configuration options to suit the requirements of each individual property. With the option of anything from one to eight panels, allowing you to create exactly what you imagined, with a seamless transition between inside and outside.

Premium technology

Electronically operated, either by a wall switch, a remote control, or integrated into your home automation system and controlled via a smart device, using the award-winning Niko Home Control system. Which allows for effortless opening of large expanses of glass.

Sat on solid stainless runners and tracks that guarantee smooth sliding throughout the life of the system.

The doors securely lock into a 100mm vented position, letting you to fill your home with fresh air, whilst keeping your home secure.

Colour options

Available in three powder coated colour options RAL 7021 Black Grey matt finish, RAL 7016 Anthracite grey Matt finish, and RAL 9005 Jet Black Matt finished. Or an anodised brushed platinum, a unique stainless-steel appearance, with a translucent look, which enhances any view. The marine grade quality of the anodised finish, makes it perfect for any coastal applications.


Installing slim line sliding doors require specialist machinery and transportation, as well as highly trained installers. Which is why the Ultraline slim sliding door can only be installed by qualified and approved Ultraline dealers. A flawless installation is paramount to ensure the reliability and long term performance of the slim line sliding door.Ultraline-slim-sliding-door-installation by Aspect Windows

Adding slim sliding doors to your home

When choosing a sliding door for your project, ensure you look at the overall appearance of the door rather than concentrating on just one section. Visit the door in a showroom, so you can experience how the door feels in use, the quality and the appearance of the door handles, the finish and the glazing. All equally important when choosing the right door for your project.

For expert help and advice call the Aspect Windows team on 01392 444233, or book a showroom appointment.


Back to News

Our Product Range

Lift and Slide Doors for Budleigh Salterton’s New Cricket Pavilion

Background Budleigh Salterton had to find a new home for its cricket club due to its previous home being subjected to seasonal flooding. Less than a mile up-steam the new...
Read More View all Case Studies

"The whole process has been excellent - I really appreciate the patience you've taken on what is a huge expenditure for a passion project, working with total amateurs! You've always taken the time to answer questions, explain options and crucially, make recommendations when nativity/inexperience clouds our judgement. A real skill and something I personally have really appreciated as I feel confident that we now have windows and doors that complement our house, design and style. Without that level of consultative engagement and relationship I'm confident I would have overlooked details and made a substandard decision. Thank you!"

Mrs Trestain, Padstow

"Just a quick note of thanks to the whole team for our fab windows and doors, we are delighted with both the product and also with the whole fitting process. The lads were brilliant (it's not often you get trades in the house who leave it cleaner at the end of the day than when they arrive in the morning!!) and just quietly got on with the job. Thank you again"

Mr & Mrs Leonard, Exeter

"The pocket sliding door and gable look amazing, it’s an impressive bit of kit and it’s a revelation to be able to open the space up! I have to say we’ve been very impressed with all your teams positivity, professionalism and workmanship, from start to finish - so a big thank you…"

Mr Marsh, Exeter

"I would like to thank you for the quality of the service we have received from Aspect Windows and commend you for the care and attention that we have received throughout the process. I am thoroughly pleased with our new windows and would recommend your services to anybody who asks."

Mr & Mrs Miller, Exmouth

"I wanted to just send my thanks and appreciation. We had an install approx. 6 years ago including some bi-fold doors which in recent weeks appeared to have dropped and became very difficult to lock. I called the office on Monday and a lady took my details and quickly called me back suggesting you had an engineer locally the following day. He arrived and was extremely polite and efficient and diagnosed a broken hinge. He went back to the depot collected the replacement part, then returned to Budleigh and completed the repair. We really appreciate the speed and efficiency with which you dealt with the issue and the ease from a customer perspective. "

Mr Ashby, Budleigh Salterton

"I just wanted to say thank you for the excellent service you have provided in the planning, removal & installation of our beautiful new windows and doors. We were completely amazed & delighted at the speed of which the installation took place and the hard work put in by the installation team. They worked very efficiently and communicated with me at ease through the week so I knew their plans with each room for installation. All the windows & door look great and we have already had lots of compliments. "

Mrs Oakes-Ash, Exmouth

"We would like to thank everyone at Aspect Windows for the fantastic service that we have received on our project. From start to finish, you have been so professional and we are totally thrilled with our sliding doors and our side door. We would not hesitate to recommend you to anyone thinking of undergoing a similar project."

Mrs Moores, Templecombe

"We would just like to say how excellent the service has been from Aspect Windows from beginning to end. The salesman could not have been more helpful, we felt completely unhurried and un-pressured. The fitter was also extremely good, he was neat, careful and very respectful of our property as well as being very sociable and polite. Congratulations Aspect Windows on a really good job I wish everything in life could be so straightforward!"

Mr Foster, Exeter

"I had chosen Aspect Windows in Exeter to supply the glazing as they had a good reputation and specialised in aluminium doors windows and curtain walling. Aspect were brilliant throughout the design and fitting process, working to incredibly tight tolerances especially on the curtain walling."

Mr Abdilla, Exeter