AluK Bifolding Doors Specifications

Capital Windows have over 40 years experience manufacturing and installing an exceptional range of windows, doors and associated products. Whatever the project, we have the right approach and materials for the perfect finish.

One Of The Slimmest Bifolds Available Today

The AluK bifolding door brings the desirability of bifolding doors closer being a superbly well designed product and manufactured to exacting standards by Capital Windows. Our aluminium bifolding door brings many features and benefits enabling multiple door styles and configurations. By connecting several bifolding door sets together complete glass walls can also be created.

Whether your property is a traditional or a modern home, our bifolding doors are one of the slimmest bifolds available today. They are also unique in offering both a square or profiled (soft line) detail externally giving you the choice of the right looking door to match your home.

We offer our bifolding doors with high quality hardware as standard that is unique to our product. Additionally the there is an innovative T handle which is unique to this product that is far superior to other bifolding doors that have protruding handles. This T handle maximises the overall space offered by the doors as it is flush and enables all the panels to stack together in the neatest possible way.

Secured By Design

A bifolding door is only as good as its hardware. Our doors use durable quality roller and guide mechanisms as well as the very latest in maximum security hook locks. Doors are all certified under ’Secured by Design’. Additionally low threshold options are available whether you want an ultra flat threshold or to meet the needs of the Equalities Act 2010 in commercial applications.

Secured by Design

Superior thermal efficiency comes as standard as well as severe weather rating on all doors. Doors are complemented with a choice of ancillary profiles including various types of cill sections, add-on profiles to suit differing site conditions and available with trickle ventilation if required.


  • 9011 Graphite Black
  • 7016 Anthracite
  • 9910 Hipca White Gloss

Capital Windows Any RAL colour can be supplied including dual colours. For the full range of Capital Windows standard colours please contact us.

Product Features

  • Double Glazed sealed units from 24mm up to 44mm are possible
  • Chamfered or square beaded options
  • An outer frame front to back dimension of 70mm
  • Internal high security glazing beads available with either a square or softline detail
  • High quality hardware utilising ultra strong stainless steel wheels giving reliable and glide-feel operation
  • Maximum security door
  • Door panels can open in or out, sliding to the left or right or as split panels stacked

Additional Options

  • Virtually any design can be accommodated
  • Unique hardware exclusive to our product
  • Can couple to window screens
  • Triple glazing and sealed units with integral blinds also available

Established in 1979, Capital Windows Ltd provide the biggest choice of home improvement products from the leading names and systems companies.