ISEO Infilare 200N Narrow-backset mortise lock | Backset 31 mm (210N301)

Lock and fitting dimensions

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

Specifications

Construction

Narrow-backset mortise lock

Backset

31 mm

Bolt/latch configuration

Reversible latch and bolt

Bolt action

Single-stage 15 mm travel

Handle spindle hole

8 mm

Centre distance

85 mm

Faceplate ends

Rounded ends

Functions and interfaces of this model

This group uses a Rounded ends faceplate and narrower backset, with single-stage bolt travel of 15 mm. The catalogue row explicitly states 26/31/36 mm; do not infer installation dimensions from 25/30/35 in the model number; Cylinder and strike plate ordered separately.

Using backset for compatibility checks

The catalogue records this model's backset as 31 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 31 mm; Bolt/latch configuration Reversible latch and bolt; Bolt action Single-stage 15 mm travel; Handle spindle hole 8 mm; Centre distance 85 mm; Faceplate ends Rounded ends. 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 210N301, 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.
• Confirm whether the cylinder, strike plate and accessories are included from the corresponding catalogue section and ordering configuration.

Sources

Manufacturer documents are provided in their original language.

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