Bi-Folding Doors

Numerous design ideas, sizes and technological solutions make them highly universal for virtually any interior and exterior style. The choice includes the simplest and most popular wooden threshold, which guarantees maximum tightness and maximum thermal insulation, as well as lower, more comfortable aluminium one. It is usually suggested for homes, where children, elderly or disabled people live.

For the most demanding customers we have also prepared a possibility to manufacture 0-level threshold.

Inter House Windows recommends, apart from standard folding door opening inwards, a model with outward opening. It makes their use even more comfortable and easier and allows to design and furnish the interior with no spatial limitations.

Additional options include the possibility of using bottom or top railed gear. Its choice depends on the building construction and customer’s expectations.

Contact Inter House Windows team to learn about all of the folding doors types available in the offer.

The incredible build quality not only gives peace of mind, but it looks great too. The doors have contemporary styled handles, patented hinges design and sleek flush bolts.

It is an extraordinarily robust system that works with doors up to 1000mm wide and weights of up to 60kg per panel. Large load capacities coupled with our unique 10 year warranty all add up to make a system that will meet your most exacting requirements.


  • Max Panel Weight 60KG
  • Max Panel Height 3000mm
  • Max Panel Width 1000mm
  • Min Panel Thickness 38mm
  • Max number of panels 10 (5 each way)
  • Max opening width 10 metres
  • Hinges made from 316 SSS passed 240hr salt spray corrosion test
  • Hinges pass 200,000 cycle test


  • 10 year exclusive warranty
  • Simple height adjustment auto-locking collars
  • Heavy duty precision hinges
  • Unique flush bolts that require just one router pass to install them
  • Pre-assembled carrier and guide hinges for quick installation
  • Compact and unobtrusive top track only 38mm square
  • Modern and aesthetic handles
  • Patented hinge system prevents ‘gauging’ of weather seals- no more service calls
  • All doors are aligned when open
  • Drilling jig that ensures simple and correct hinge fitting is also available