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Ultra Slim Flush Glazed Timber/Glass

WG55 GlassIIEdge™

Thermally Insulated Flush Glazed
Bifold Door System

Flush glazed, frameless glass bifold with hardwood timber. Ultra slim modern contemporary appearance. Clean narrow lines and smooth appearance.

10 Year Manufacturers Warranty

10 Year Insurance Backed Warranty

25 Product Warranty

£1,000 Security Warranty


GG55 53mm 2" uses our patented Glass2Edge Logo system, a sleek modern look both inside and outside.

The 55 series offers a new and revolutionary way to glaze your home or business, giving you the ability to design windows and doors your way. Choose which material you require on each side from Edgeless Glass, Aluminium, or Timber and then choose the colours to suit your vision.

The GG55 system offers strength and durability while being low maintenance. The thermally broken profile provides an efficient product that will help ensure your home stays the right temperature and keeps your heating and cooling bills low. All 55 series frames can be customized with a choice of RAL colours, hardware, thresholds and glazing options.

A matching range of windows and doors are available.

CE Compliant
BS EN 14351-1: 2006

Approved Installer

Glazing Technology

GG65 profile drawing


Key Features
  • Thermally broken for greater thermal efficiency
  • Finger safe and severe weather rated seals and gaskets
  • Environmentally sourced timber from sustainable forests
  • Dual running roller system, encapsulated in the track
  • Corner posts can be incorported to produce corner openings
  • Hidden Rollers and locking
  • Heavy-duty corner connectors for strength and durability
  • Hard wearing material and finish
  • Anti-rot and anti-fungal treated frames
  • Factory sprayed timber with long life, low maintenance finishes
  • No condensation
  • Mechanical life expectancy of up to 25 years
  • Modern appearance with a traditional twist
  • Corner posts can be incorporated to produce corner openings
  • In-line out of sight track offering a practical functionality
  • Marine treatment available for salt water environments
  • Outlet Water escape
  • Pull handle(s), to enable ease of operation and easy closing
  • Resistant to scratching & denting
  • Robust hardware using our own ‘Fold N Slide’ hardware range
  • Steel wheels sealed bearings for maintenance free use
  • Structurally strong - built to last
  • Thicker, stronger aluminium profiles than most competitors
  • Trickle Ventilation, to satisfy building regulations


  • End panels and pass doors are fitted with high security locking mechanisms
  • Intermediate panel joints are held closed by internal shoot-bolts top and bottom
  • Option of key locking shoot-bolts are available for added security and external access
  • Internally glazed for all systems (option to upgrade to laminated impact glass)
  • Finger safe gaskets are designed to be safe should fingers get trapped upon closing
  • Encapsulated running gear within the track, preventing it from being attacked
  • Tongue and groove (interlocking panels) design to prevent panels from being crow barred open
  • Document Q, Security - Dwellings PAS 24:2012.


  • High performance seals/gaskets
  • PVC nitrile (synthetic rubber) gaskets, fitted as standard and used to seal the double glazed units into the panels and protect the door from water ingress
  • PVC nitrile seals between each panel (including top and bottom of the panel) to prevent water, wind and noise from entering the property
  • Tested for water ingress, wind resistance and air permeability

The main properties of PVC nitrile is its outstanding heat, acoustic and thermal resistances.

Thermal efficiency
  • No condensation
  • Super Spacer® bars fitted as standard to glass units
  • Thermally insulated aluminium track
  • U-Value of complete unit from 1.42 W/m2k
  • UKAS PAS23 weather tested
  • Weather tested to over 300 pascals


Frame width: 60mm / 2⅜in
Frame depth: 70mm / 2¾in
Maximum opening width: 18300mm / 60ft
Maximum opening height: 3000mm / 10ft
Panel height range (min/max): 305mm / 1ft - 3000mm / 10ft
Panel width range (min/max): 305mm / 1ft - 2100mm / 7ft
Material: Glass outer / timber inner (reversible)
Stock colours: Glass / RAL
Optional colours: Glass tint, clear or RAL colour
U-Value of complete unit - W/m2k: 1.39 - 1.79
U-Value of centre pane (Glass) - W/m2k: 0.92
U-Factor of complete unit - Btu/h·ft²·°F: 0.24 - 0.30
Guarantee (Product): Up to 25 years
Guarantee (Manufacturers): 10 years
Aluminium thickness: 1.75mm / 1/16in
Glass units, standard: 52mm / 2in double glazed, low-E tempered
Glass units, optional: Triple glazing, Laminated, anti-sun tinting (grey, bronze, green and blue), Turtle Glass, Krypton Gas
Installation Services

We offer a range of installation services

Explore the GlassIIEdge™ bifold door ranges



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Aluminium / Glass



Timber / Glass



Ultra Slim Timber / Glass