Origin OB49 Bi-Fold Doors

Origin OB-49 Bi-Fold Doors

Introducing the Origin OB-49 Aluminium Bi-Fold Doors from Herts Glass – an embodiment of refined engineering and sleek aesthetics. The OB-49, a slimline door system, is a reimagined version of the industry-acclaimed OB-72. With an impressively narrow sightline of just 49mm, it offers a design that maximizes glass area and minimizes visible profile, providing a breathtaking panoramic view of your surroundings.

Manufactured from high-grade aluminium, these doors provide expansive panel sizes without sacrificing security, thermal efficiency, or operational performance. Indeed, the OB-49 is a seamless blend of form and function, exemplifying the ultimate in door solutions.

Our commitment to quality is reflected in each installation being registered with Certass, the industry’s trusted governing body. By choosing Herts Glass, you opt for peace of mind and long-lasting performance, because your home deserves the very best. Contact us today for a free quote!


  • 110mm sightlines
  • Maximum door width 1200mm
  • Maximum door height 3000mm
  • Door to door Anti finger trap
  • 8 locking points
  • Ultra smooth running
  • Over 150 different RAL colours
  • Colour matching hardware
  • Different Handle styles and finishes
  • U-values up to 1.1 w/mk
  • PAS24
  • Low maintenance
  • 20 year manufacturer’s guarantee
  • Fast lead times

Discover the Versatility of Origin Bi-fold Doors with Herts Glass

No matter the style of your home – be it a period house, a modern new build, an unconventional property, or a charming cottage – there’s an Origin bi-fold door designed to accentuate its uniqueness and enrich your living experience.

Our Origin bi-fold doors are bespoke creations, designed to help you maximize your space. With options ranging from one to eight door sets, and individual doors customizable in widths as slim as 400mm to as broad as 1200mm, and heights up to 3000mm, we ensure a perfect fit for any space. Moreover, you can specify your preferred operation – whether the doors fold in or out, or how they slide – to meet your specific needs.

Adding to the overall coherence of the Origin range, our bi-fold doors seamlessly blend with existing door and window systems, thanks to their slim profiles. The expansive glass panes, housed within an ultra-strong aluminium profile, enhance the aesthetic and structural integrity of the doors.