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Product description

A versatile and flexible solution for a range of applications including shop fronts, entrances and ground floor framing the GT55 TB aluminium ground floor treatment system has been designed to offer high levels of performance through thermally broken screening. The system also includes an integrated range of high-traffic, anti-finger trap doors suitable for single storey applications.

Providing high levels of thermal performance, the GT55 TB aluminium ground floor treatment system has been designed in a ladder frame construction to provide a flexible solution for low rise glazing applications and can be integrated with other AluK systems. Sealed units of 6mm up to 32mm can be accommodated to improve thermal and acoustic performance.

Design features

  • Pocket or bead glazed for ease of site glazing
  • 110mm frame depth to accommodate varying types of applications
  • Slim 55mm profile width for increased glazing and light transmission
  • Ladder frame construction to enable fast on-site installation
  • Fully compatible with other AluK systems


  • Can accommodate 6mm - 32mm sealed units for thermal and acoustic performance
  • Wide range of hardware available offering full customisation
  • Available in single or dual colour option, polyester powder coating and anodised finishes
  Thermally broken system
U value W/m²K (Double glazing) 1.4 W/m²k
BRE Green Guide rating C Rated
Acoustic performance (dB) npd
Air tightness (Pa) Class 4
Water tightness (Pa) Class 5A
Wind load (Pa) Class 5
Security npd
Top hung X
Side hung X
Fixed Light X
Top hung (max weight) 180 Kg
Side hung (max weight) 55 Kg
Fixed light (max weight) 200 Kg
Tilt & turn (max weight) 100 Kg
Size limits  
Frame options 110mm
Dual color option X
Single point locking X
Electro mechanical locking X
Glazing options Pocket Glazed
Glazing thickness 6mm - 32mm

Download collateral.

Please click here to download supporting collateral for this product which includes the following;

  • Brochures
  • Data sheets
  • Wall charts
  • Profile and section drawings
  • Installation guides
  • BIM models

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