Origin is the UK’s leading specialist manufacturer of aluminium doors and windows. Designed and manufactured at Origin’s impr ... essive Buckinghamshire factory, each and every product is bespoke and available in a huge variety of configurations. Origin Bi-fold Doors are distributed throughout the UK through a network of accredited Origin partners. Exceptional care is taken in designing our sliding folding doors for durability and long-term performance. Only ultra-high quality components, specially designed by us. Each one of our skilled craftsmen takes pride in creating the best Bi-fold doors money can buy. That's why Origin Bi-fold Doors are guaranteed by us to perform faultlessly for at least 20 years. Each bespoke door set comes with a unique serial number that guarantees the doors at the property for two decades. No other manufacturer of bi-fold doors guarantees their products for this length of time. read more