• Bifolding Doors

    One of our most popular products - bifolding doors allow you to seamless merge your indoor space with the outside.

Aluminium Bi-Folding Doors are one of the most popular home improvements we offer. They bring light and space into your home as well as providing a large clear opening. Our range of Aluminium Folding Doors is manufactured from dedicated profiles designed by Smart Systems, one of the UK’s leading architectural aluminium system suppliers.


Smart’s Visofold series of Bi-folding Doors have been available in the UK and Europe for a number of years offering both domestic and commercial folding door applications using Visofold 1000 and Visofold 4000 respectively.

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Our Aluminium Bi Fold doors are manufactured from slim 60mm thermally broken profiles to ensure maximum glass widths can be acheived using the minimum number of panels. This allows for more natural light and unobstructed views of the outside world. There are no additional mullions required between the panels that broaden the sight lines so when panels are folding and sliding in the same direction, the width of the aluminium from edge of glass to edge of glass is just 132mm.


Handle Options

Lever handles operate the hook bolt locking system on traffic doors and provide external key access whilst intermediate panel shoot bolt locking is operated by internal fold-flat handles as shown. Handles are available in white, chrome or black finishes but can be supplied to any RAL colour at extra cost. Please note that the style of traffic door handles will differ when RAL colour handles are specified. ‘D’ handles (black or chrome only) are fitted to the hinges of the intermediate panels to allow easy opening and closing of the bifold doors.



Low Threshold Option

The Visofold 1000 aluminium bifolding doors feature strong, durable profiles and a choice of low or weathered thresholds. The non-weathered low threshold provides the opportunity to create flush floor levels between two living spaces by sinking the threshold into the floor and merging the two floor areas into one. This is particularly useful for room dividers or for doors installed between the main house and conservatory where they are often left open most of the time.


Main Features

  • Ultra slim sight lines of just 132mm
  • Aluminium Profiles provide security and slim sight lines
  • Low Threshold Option
  • Polyamide Thermal Break for superior insulation
  • High Performance Weatherseals
  • Internally glazed for high security
  • 28mm Clear Toughened STAYCOOL Double Glazing 1.1 U-value
  • Optional integral blinds available
  • Solar Control Glass 57% Heat Reflection 35% Glare Reduction
  • Traffic doors on some styles enable ease of use in the winter
  • Available in many different RAL colours with dual colour option
  • High security locking on traffic doors and intermediate door sashes
  • Doors can be specified to fold inwards or outwards and slide left or right

Tel: 01253 922211 | Email: sales@21stblackpool.co.uk | Or click to