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Consumer protection when purchasing double glazing.

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10 year guarantee
10 year guarantee on all our windows, doors and conservatories.

Commercial Doors

GT55 TB Commercial Door

Product description

the GT55 TB alumimium door system provides the ultimate combination of security and performance. It also includes thermal break profiles for improved performance. These aluminium doors are ideal for a range of heavy duty commercial and public sector applications including offices, hospitals, schools and multi-residential buildings.

Design Features

  • Security tested to PAS 24
  • Thermally broken for enhanced performance
  • Sightlines of 145mm (single door) and 176mm (double door)
  • Anti-finger trap stsyles
  • Mid-rail and lay bar
  • Angular corner feature designs


  • Single and double door configurations
  • Available with a full range of security and customisable hardware
  • Mechanical and electro-mechanical multipoint locking systems
  • Electronic and manual access sytems easily integrated
  • Glazed or non-glazed options
  • Available in dual or single colour option, polyester powder coating and anodised finishes
  • Standard or DDA compliant overhead closer

Technical Data


GT55 Door and Ground Floor Treatment Section

A robust heavy duty commercial door and screening system for use in high traffic applications such as offices, hospitals, schools, multi residential and retail premises. The GT55 system is available in various options either fully rebated or low threshold, thermally broken (TB) or non-insulated (NI). With a slim sightline of 55mm the GT55 screening system is available in single or dual colour, polyester powder coating and anodised finishes.

Sizes and Glazing

Performance and Security

Thermal Performance

U-values based on CEN size door (1000mm x 2180mm) using 1.0 W/m2K double glazing with warm edge Swisspacer V bar. All weather test data taken from BS EN 6375-1 (Part of PAS 23) based upon the highest performing door configuration. Sound insulation values are Rw reduction values and are based on tests using acoustic glazing. Please visit aluk.co.uk to download all BIM components and CAD files.

SBD Configurations

PAS 24 Security rated Lock

GT55 Systems Selector

Curtain Walling

SL52 Curtain Walling System

Designed to offer a flexible, high performance solution, the SL52 Curtain Walling System is a capped solution that enables specifiers to create impressive facades that not only enhance the aesthetics of a building but also provide the functionality and performance required to meet and exceed current standards.

Design Features

  • 52mm capped high rise curtain walling system
  • Glass loads of up to 400kg
  • Can be faceted, curved or angled
  • Various drainage methods including mullion and zonal
  • Wide range of face caps to meet your design requirements
  • Fully integrated vent options including POV, TBT, Top Humg, Side Hung, Fixed Light
  • Large range of box sizes to optimise small to large spans of glazing
  • CWCT certified


  • Standard, Sleek-Look and Alu-Steel framing options available
  • Glazing and infill range form 6mm-50mm
  • Fully integrates with all AluK window and door ranges
  • Available in single or dual colour option, polyester powder coating and anodised finishes


  • Flexible design allows SL52 to be tailored to suit your project needs
  • Multiple construction options including traditional shearblock T-connectors, front loaded transoms with sprung T-connectors and special profiles that achieve semi-unitised off site construction
  • Concealed mullion drainage options and visible zonal drainage option
  • Varying mullion depths allowing a wide range of achievable lxx values
  • Wide range of mullion depths ensures maximum structual optimisation

SL52 Curtain Wall Technical Specifications

The SL52 is thermally broken and has been designed to offer flexibility in specification and installation. A complete range of configurations are available to meet the needs of your project's aesthetics and performace. These include a wide selection of cap designs and the incorporation of fixed lights, opening vents and an extensive range of colours. The system is available in any RAL colour and can be dual colour (inside and out) if required. Anodised finishes are also available with marine grade guarantees available on request.

CAD cross sections and thermal profiles

want more information? 020 8578 0447

Oakview Window Company Ltd

Oakview Window Company Ltd is a family run business providing double-glazing and secondary glazing, windows, doors and conservatories. The company was created in January 2008 by professionals with over 10 years experience in the double-glazing industry and modern knowledge of the latest manufacturing processes.

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Contact Us

T: 020 8578 0447
T: 020 8564 9233
E: info @ oakviewwindowcompany.co.uk

3 Westbourne Parade
Uxbridge Road
UB10 0NY

oak view window company

020 8578 0447 / 020 8564 9233