Mottura Series 40 traditional double-bit mortice locks for wooden and metal doors and frames, suitable for both replacement and new installations.

The range includes side-lock and three-point versions with different backsets and two- or four-turn locking configurations. Multiple sizes make it possible to match many existing installations.

Among the available models is Mottura 40.701, a side-lock four-turn version offered with 50, 60 or 70 mm backsets, alongside other Series 40 variants with different dimensions and locking arrangements.

Series 40 is particularly useful when replacing an existing Mottura double-bit mortice lock while retaining the original door layout. Compare the old lock code, backset, case dimensions, bolt positions and faceplate before ordering.

If the old model cannot be identified, photographs and accurate measurements can help determine the compatible replacement.