Closed the Origin OB-49 and OB-72 bi-folding door systems are visually pleasing, ultra-secure and ultra-thermally efficient. Admired, during opening and closing, they’re an effortless creation of British engineering. Open, there’s absolutely nothing to see, except your vista.
The key difference between Origin OB-49 and OB -72 is the frame thickness, which in turn creates the sightlines, the glass-to-glass measurement, OB-49 is 110mm and the OB-72 is 154mm. Origin’s bi-folding doors do better, what other bi-folding door manufacturers’ doors try to do, they work better, fit better, look better, and feel better. They also give better options, better guarantee, better colours, and better support.