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Replacement bifold door locks, gearboxes and shoot-bolt mechanisms for repairing folding doors that no longer lock or secure correctly. Depending on the system, the gearbox may transfer the handle movement to locking rods at the top and bottom of an intermediate panel, while other bifold doors use hook or conventional locking arrangements.
Our range includes replacement components for systems such as Debar Robus, ERA WarmCore/Liniar, Clearspan S1000 and Fenster. To find the correct lock, compare the gearbox body dimensions, spindle diameter, handle screw centres, PZ and backset where applicable, shoot-bolt throw and rod connection size with the original component.
Replacing a failed gearbox can often restore the existing bifold door without replacing the complete door set. If you are unsure which version you have, send us photos and measurements through our part identification service.