ISEO Portoncino Right-handed mechanical rim lock | Backset 50 mm (421502)

Lock and fitting dimensions

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

Specifications

Construction

Right-handed mechanical rim lock

Backset

50 mm

Handing

Right-handed

Inside operation

Cylinder

Outside cylinder

Separate

Bolt throws

2

Bolt/latch configuration

Separate latch controlled by inside pull rod and outside key

Functions and interfaces of this model

This model combines inside Cylinder with outside Separate, Separate latch controlled by inside pull rod and outside key. Determine right-handed installation from the manufacturer's original drawing, not from the observer's position relative to the door; check the 2-throw bolt and the operating travel of other models separately.

Using backset for compatibility checks

The catalogue records this model's backset as 50 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 50 mm; Handing Right-handed; Inside operation Cylinder; Outside cylinder Separate; Bolt throws 2; Bolt/latch configuration Separate latch controlled by inside pull rod and outside key. 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 421502, 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

• 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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