Smooth gliding panoramic doors

Crystal's inline patio doors allow natural light to flood into a property through large glazed sashes. The full width thermal core at the heart of the range gives the desirability and durability of aluminium, while keeping the home snug and warm. Custom designed 10 wheel rollers glide effortlessly on a precision engineered track, making these panoramic doors the perfect blend of aesthetics and performance.

Every patio is independently certified to PAS24:2016, the benchmark in enhanced security performance requirements for doorsets and windows in the UK. Each door is also fitted with a high security ‘Anti-Snap’ and ‘Anti-Bump’ Yale Platinum 3 Star cylinder, designed to provide maximum security against known cylinder attack methods.

Visit the download page where you can download a huge range of brochures and technical guides.

Features and benefits

  • PVC-U thermal core
  • Superior thermal performance - U value of 1.4 W/m2K with 28mm double glazing and 1.0 W/m2K with 44mm triple glazing
  • Slim sightlines
  • Idea for residential and commercial building applications
  • Door leaves are triple sealed to eradicate draughts and ensure excellent weathertightness
  • PAS24:2016 and Secured by Design compatibility
  • Four class aesthetic styles available: pencil round, chamfered, square and decorative
  • Available in a choice of 2 colours: white and grey
  • Choice of 3 handle colours: grey, black and stainless steel
  • Flexible threshold options
  • 'Anti-bump' and 'Anti-snap' Yale Platinum 3 Star cylinder
  • 10 self-levelling rollers for smooth and reliable performance


Crystal offers a range of colour options and all of these choices are available in dual colour specification. All colours shown below are a guide. Before making your final decision please ensure you have seen a sample.


Warmcore patio 6

Warmcore patio 3

Warmcore patio 4a

Warmcore patio

Crystal Direct doors boast
huge benefits

  • Warranty

    Warmcore patios come with a 10 year manufacturer's warranty

  • Energy efficiency

    Marketing leading thermal performance due to PVC-U core

  • Security

    PAS24 and Secure By Design compatibility as standard provides peace of mind for end users

  • Quality

    Manufactured to the highest quality standards, fully accredited and CE 

  • Recycling

    End of life PVC-U products are given a new lease of life via recycling

Crystal directAccreditations

To find your local supplier use the search box below to get
a list of Crystal approved and Platinum partner
supplier locations
within your area.