ISEO Portoncino Left-handed mechanical rim lock | Backset 70 mm (402703)

Lock and fitting dimensions

Check the backset, centre distance, faceplate and mounting points against the specific model drawing.

Specifications

Construction

Left-handed mechanical rim lock

Backset

70 mm

Handing

Left-handed

Inside operation

Knob

Outside cylinder

Separate

Bolt throws

3

Bolt/latch configuration

Separate latch controlled by inside pull rod and outside key

Catalogue status

Discontinued (red square in the catalogue)

Functions and interfaces of this model

This model combines inside Knob with outside Separate, Separate latch controlled by inside pull rod and outside key. Determine left-handed installation from the manufacturer's original drawing, not from the observer's position relative to the door; check the 3-throw bolt and the operating travel of other models separately.

Using backset for compatibility checks

The catalogue records this model's backset as 70 mm. Backset is measured from the specified faceplate or door-edge reference to the operating centre. It describes a different direction from centre distance, lock-body width and door thickness; retain the original drawing's reference when measuring.

The selection checklist should also retain: backset 70 mm; Handing Left-handed; Inside operation Knob; Outside cylinder Separate; Bolt throws 3; Bolt/latch configuration Separate latch controlled by inside pull rod and outside key; Catalogue status Discontinued (red square in the catalogue). Even for models with the same backset, compare handing, latch/bolt configuration and drive interfaces.

Checks before replacement and installation

Give the supplier the full model number 402703, photographs of the original lock body, door handing and measured dimensions. The measurement reference in the diagram only explains what the dimension means; it cannot be used directly as a drilling template.

For electric configurations, also check power-supply and control requirements; for mechanical versions, check the strike plate, cylinder connection and range of movement.

Limitations

• The original catalogue marks this model as discontinued; this record supports old-lock identification and replacement-document checks; this is not a statement of current availability.
• This page follows the specific model row in Catalogue .42; it does not replace site installation drawings or the manufacturer's confirmation of current supply.
• The measurement diagram explains only this page's dimensional reference; it does not show the product appearance, drilling positions or complete installation dimensions.

Sources

Manufacturer documents are provided in their original language.

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