Aluminium Sliding XL Patio Doors

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Quality ASS70HI Aluminium Sliding XL Patio Doors designed & manufactured in the UK


Our ‘super-size’ aluminium patio door is manufactured from materials supplied to us by the world’s number 1 aluminium systems company; Schüco. This highly engineered door system is typically continental in design and offers outstanding performance. This is demonstrated by the fact that individual sashes can be manufactured up to a stunning 3 metres wide by 2.5 metres high. Imagine a six metre wide opening with only two sashes; imagine KAT XL.

KAT awarded North West Enterprise Award for Best Patio Company 2017.

Key features of Aluminium Sliding XL Patio Doors

  • Capable of spanning massive openings with few upright sections
  • Perfect for swimming pool enclosures or where the view is optimum
  • Slim aluminium sections means more glass and more light
  • 3 star, diamond rated cylinder with kitemark
  • Option of 2, 3 and 4 panel openings
  • SmartClose soft-closing operation, which can be viewed in our short video.
  • Massive choice of colour with a 25 year paint guarantee option


  • Integrated blinds fitted between 2 panes of double glazing

7016 Anthracite Grey matt
9005 Black matt
9016 White gloss

Or any RAL colour can be supplied,
including dual colours
Sash options 2, 3, 4 or 6 pane options Sliding to left or right.
Double or triple track options (*please see Technical Specification for Triple Track) Contemporary Square profiled frames available as well as a heavy duty option.
Integration with Schüco doors and windows.
Minimum overall width – 2400mm
Maximum overall width – 11500mm
Minimum overall height – 2000mm
Maximum overall height – 3000mm
Minimum sash width - 1200mm
Maximum sash width - 3000mm
General Description
The Schüco ASS70HI sliding door is the ultimate patio door and it is this product that you will often see in the large glazed extensions typical of Grand Designs programmes and others. All doors are available as Slide only or Lift and Slide operation. Multiple tracks are available that enable panels to slide behind each other, maximising the clear opening.

Sophisticated roller and track technology gives ultra- smooth and silent operation even where the large sliding panels are installed.
Planitherm Total Plus Low Emissivity,
soft coat glass
Clear or Obscure
Argon filled units
Warm Edge Spacer Bar (Black or Grey)

Triple Glazing can be accommodated up
to 52mm with the ASS70
U-value of 1.0 with 0.5 glass
Frame depth 160mm front to back.

A premium aluminium sliding patio door chosen for its exceptional engineering, design and function.
Door profile dimensions only 88mm up to 108mm providing the most light and
visible glass.
Can be made larger and taller than other sliding patio doors with sliding panes possible at 3 metres square.
A very high security door, fitted with Ultion triple star diamond rated cylinder.
Smooth and light sliding operation.

Thermally insulated aluminium profiles with high stability. Excellent thermal and sound insulation. Double continuous EPDM gaskets for increased sound
insulation for lift-and-slide system.
Weathertight to 600 Pa
Thermally insulated profiles and high
quality gaskets
ASS70H1 Maximum sash weight – 300kg
Slide only and 400kg Lift ‘n’ Slide

Product Awards




Our Schüco ‘super size’ aluminium patio door was conceived to satisfy the desires of the most demanding glazing projects. Designed in Germany where large glazed openings have been commonplace for many years, this door system provides the ultimate solution with the fewest sightline obstructions.

Call into our Showroom in Macclesfield to see the quality of these Patio Doors first hand.



Blinds Within Glass


Integral venetian blinds are made to fit neatly between 2 panes of glass, offering a contemporary look for Schuco Patio Doors in a choice of 10 colours; White, Yellow, Hay, Sage, Sky, Cream, Putty, Silver, Dark Silver and Dark Grey. 

Raising and lowering of the blinds is controlled using either a Rotational Wand, Rotational Knob or a Cord system. The blinds carry a 5 year guarantee, are maintenance free, conform to BSEN 13120 Safety Standards and are suitable for 28mm double glazed door sashes up to 1200mm wide.

Material Information


Aluminium doors and windows have gained in popularity in the later half of the 20th century.

The strength of aluminium allows Patio doors to be made with slim sightlines, resulting in a higher percentage of glass allowing more natural light into your home.

Aluminium doors require very little maintenance, just a wipe with a damp cloth when needed and a regular check to ensure the track is kept free from grit and small stones to ensure the doors continue to run smoothly. Aluminium is more resistant to the elements than uPVC and is not likely to warp or rot.




Our XL Aluminium Patio Door hardware can be manufactured in austenitic steel which is a marine grade finish for coastal applications.

Please consider your choice of ancillary hardware carefully. Check out the finishes on our handles because it is attention to detail that helps make this unique product range so exciting.

Available in:

  • Black
  • Anodised Silver




Safety & Security


Our patio doors are designed to discourage even the most determined intruder.

The KAT XL door is so heavy it is virtually impossible to jemmy open and therefore, this door can be left in a locked-open position to allow for ventilation. This is an extremely secure product, fitted with a 3 star diamond rated cylinder with kitemark to keep your home secure.

Safety & Security

Colour Options


A little time and care with your choice of colour is advised and your selection should be influenced by your style of property, surrounding architecture or your other windows and doors. You should also carefully consider the colour of handles inside and out.

KAT Schüco Patio Doors are available in a wide range of RAL colours. Our 3 standard colours are Anthracite Grey, White or Black and these are available with a short delivery time.

Call into our Showroom in Macclesfield and we will can show you a colour chart demonstrating each of the RAL colours available.




We pride ourselves in having some of the best products in the UK. Learn more about the supplier of this product on our suppliers page.

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