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sliding doors by alpine aluminium

 Ultra Slim Sightlines 

20mm Frame - Alpine Aluminium's AP UltraS Slimline Sliding Door 


AP45 Aluminium Sliding Door exterior

Only 20mm Frame Width
The Slimmest in the UK

AP45 Aluminium Sliding Door turnaround

Available in
any RAL Colour

high security sliding doors

7 Day Turnaround
Fastest Available in the UK

low threshold aluminium sliding door

Invisible Handles

Aluminium Ultra Slimline Sliding Doors

AP UltraS Slim Sliding Doors Design Features


With a profile width of just 20mm, Alpine’s AP UltraS aluminium sliding door system is not only the slimmest available in the UK but also capable of supporting expansive panels up to 3m high. Manufactured and hand-finished at our specialist factory in Leeds, Alpine’s AP UltraS slimline aluminium sliding door system is fully customizable, allowing you maximum control over the style and operation of your doors and the perfect finishing touch to your home. Alpine Aluminium’s precise engineering using only Alpine Approved components is reassuringly accompanied by lengthy guarantees, ensuring years of faultless operation and providing you with total peace-of-mind.



call alpine aluminium today

0113 253 0254

Register Your Details Online Today to Reserve Your 10% Discount and Alpine NOW Upgrade!

AP UltraS Slimline Aluminium Sliding Doors

The Alpine AP UltraS Slimline Sliding Door features impossibly thin 20mm sightlines creating the illusion of a large endless space, while its inherent strength enables it to support panels of up to 3m high, either as a double or triple track. The Alpine AP UltraS Slimline Sliding Door is available in a wide range of colours and finishes to suit your home.







AP UltraS Sliding Door Design Features

  • Fully concealed outer frame
  • 20mm visible sightlines
  • One or more opening panels
  • Incredible width dimensions
  • Expansive height dimensions (up to 3000mm)
  • Pocket sliding option available in twin or triple track
  • Powder-coated invisible handles
  • Floor-to-ceiling panoramic views
  • Holds up to 400kg panel weight
  • Multiple configurations
  • Possibility of interior and exterior corner at 90º without a mullion
alpine aluminium slimline ultras sliding door

Extended guarantee and upgraded spec on your slim sliding doors


If you are looking for aesthetically stunning design combined with incredibly thermally efficient sliding or aluminium lift and slide doors, then get in touch with one of our friendly sales team today or visit us at our showroom in Leeds. An Alpine Sliding Door Specialist will be able to help you with a wealth of useful advice whilst providing you with a no-obligation quote based on your individual requirements as well as securing your 10% discount, 15-year guarantee and FREE Alpine NOW upgrade.


Request a copy of our AP UltraS Slimline Sliding Door overview brochure and receive a 10% discount!


Simply request a copy of the AP UltraS overview brochure by visiting our downloads section, calling our admin team or completing the no-obligation enquiry form today, and receive a 10% discount, extended guarantee and FREE Alpine NOW Specification Upgrade on any subsequent order.




Alpine Now - Our Priority Upgrade


Alpine Aluminium understand that it is not just a bespoke product that you require, but also a bespoke service. From our manufacturing centre in Leeds, we are able to achieve the fastest turnaround currently available in the UK. In addition, we have a wide range of Alpine Approved options and components which will ensure your sliding doors, windows or roofs exceed all expectations with Alpine NOW! 

Alpine Now Upgrade Features:

upgraded glass for better efficiency

Upgraded Thermal Glass


Upgrade today to improved
thermal efficiency with the 4S
glazing system

5 day turnaround doors and windows5 Day Turnaround


From 7 days to 5 days.
The fastest in the UK!

15 year guarantee15 Year Guarantee


Extended guarantee from
10 years to 15 years


colour matchingSeamless Colour 


Perfectly seamless look with matching RAL7016 gaskets, handles and hinges

any colour bifold doors and windows
ANY Colour


Choose ANY colour
to match your home





get a free quote today

Contact Us

Alpine Window and Door Systems Limited
Unit 6, Hawthorne Court
Howley Park Road
Morley, Leeds
LS27 0BN
Tel: 0113 253 0254
Fax: 0113 252 2202
Aftersales: 0113 4689291
Company Number: 05466675