aluminium sliding patio doors

Sliding Patio Doors

BSC94 Aluminium Sliding Doors

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Quality KAT AluK BSC94 aluminium sliding patio doors designed & manufactured in the UK


Our aluminium sliding patio door system is perfect for smaller openings up to 6 metres wide.  This patio door features slim sightlines but is very secure. When coupled with low emissivity glazing, these thermally enhanced doors achieve very acceptable U values.  These inline sliders are perfect for applications where it is desirable not to open in or out of a room and they offer a far larger glass area than a set of French double doors.

KAT awarded North West Enterprise Award for Best Patio Company 2017 and 2018.

Key features of KAT AluK Aluminium Inline Sliding Patio Doors

  • Enhanced security lock
  • Slim aluminium sections means more glass and more light
  • Option of 2, 3, and 4 panel openings
  • Available in Anthracite Grey matt or White high gloss from stock
  • Rigid aluminium sections allow for more glass and therefore more light in your home
  • Stainless steel wheels and tracks
  • Twin Track or Triple Track
  • 85mm sightline meets PAS24 security


  • D handle in Satin, White or Black
  • Available in Chocolate Brown or Deep Black
  • Available in dual colours with Black matt or Anthracite Grey matt outside and White high gloss inside

General Description
Elegant and efficient in line aluminium sliding patio doors system in a range of options with slim sightlines.
Dimensions of Twin Track
Up to 6 metres wide
Meeting Style 85mm and meets PAS24
Frame depth front to back - Twin Track 94mm - Triple Track 155mm
Max sash width 2000mm
Max sash height 2800mm
Max frame width 3000mm
Max frame height 3000mm

2, 3 or 4 panes
Maximum 400kg panel weight for inline sliders
Standard frame size, thermally broken
Height is 49.5mm
Standard bead is 28mm square shape
36mm square bead available
Twin Track 177mm
Triple Track 190mm
Intended for domestic use – not high rise.
Weather Test Results –
Air 600 Pascals
Wind 1600 Pascals
Water 300 Pascals
U value W/m2K 1.6, subject to glass
Designed, tested and manufactured to the highest security standards with high security multi-point locking
3 Star Diamond Rated Cylinder with Kitemark
D Handle in Satin
From stock, we supply:
Single colour:
Anthracite in a Matt finish
White in a High Gloss finish

Available on a slightly longer lead time:
Single colour, Chocolate Brown RAL 8017M, Deep Black RAL 9005M
Dual colours, Anthracite Grey matt out/White high gloss in or
Black matt out /White high gloss in

Outerframes up to 6 metres will be delivered fully made up as standard.
Outerframes over 6 metres wide or 6 metres high will be delivered in kit form – 1 tube of silicon will be supplied
We can supply outerframes under 6 metres in KIT form if preferred.



It’s not the door you look at but the view through the glass, to the world outside.

Our standard patio doors allow so much light into your home because the sashes are so wide that there are few vertical panels. Incorporate a KAT patio door into your build and add that touch of contemporary design elegance to your project.


Material Information


Aluminium offers the widest possible choice of colour options.

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 PVCu and is not likely to warp or rot. We offer a 10 year warranty on standard paint or 20 years warranty on Marine Grade paint.




As standard, we fit a D handle in a silver finish, as pictured, both inside and outside.



Safety & Security


Our aluminium in-line sliding patio doors are designed to discourage even the most determined intruder, thanks to our high security locking systems. 

All KAT doors are fitted with a 3 star security cylinder.

Our patio doors have integrated anti-lift systems designed so they cannot be lifted off the track from the outside, when in the locked position. Plus, aluminium will require less cleaning than uPVC.

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.

From stock, we supply:
Single colour: Anthracite Grey in a matt finish and White in a high gloss finish

Also available are:

Single colour: Chocolate Brown or Deep Black in a matt finish

Dual colours: Anthracite Grey matt or Black matt outside with a White high gloss finish inside

Just let us know your sizes and how you would like the doors to open and we can make your Sliding Patio Door to your bespoke dimensions.