Name: ISEO F5 80/40 mm Euro-profile double-ended cylinder with flat thumbturn (825980409)
Brand: ISEO

ISEO 825980409 — Official series illustration, not a photo of this exact size variant; consult model specifications. — Official series illustration, not a photo of this exact size variant; consult model specifications.Image source

ISEO 825980409 length sections: C 80 / D 40 mm · L 120 mm — Drawn by this site from the catalogue parameters on this page to show C/D sections and overall length L; not the actual product outline or an installation drawing. Check side functions and measurement references against the original catalogue.

Cylinder dimensions

Dimensions from model documentation
Specifications	Dimensions from model documentation
Overall length L	120 mm
Side C length	80 mm (thumbturn side)
Side D length	40 mm

Measure both sides from the fixing screw. Check the cylinder profile, cam and version.

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Specifications

Construction: Euro-profile double-ended cylinder with flat thumbturn
Overall length L: 120 mm
Side C length: 80 mm (thumbturn side)
Side D length: 40 mm
Operating function: Flat thumbturn operation inside, key operation outside
Cam: 30° DIN cam
Pin configuration: 5 pins
Keys supplied: 3 keys
Key blank code: 020259

Section dimensions and installation orientation

This specification has an overall length of 120 mm; side C is 40 mm longer than side D. C is the thumbturn side; measure each side to the fixing screw centre separately. Do not purchase solely by overall length.

Operating construction and compatibility

The length on the thumbturn side affects hand clearance. During replacement, check the gaps between the cylinder guard, handle and thumbturn; round and flat thumbturns have different shapes.

Brass order number in this row: 825980407; nickel-plated order number: 825980409. A dash means no number is listed in that column.

Limitations

Check section lengths against the existing door, cylinder guards and fixing screw centre position together.
Finishes are combined in this record; the manufacturer should confirm specific availability and the complete ordering configuration.

Sources

ISEO Catalogue 01 .42, page 1-155

Manufacturer documents are provided in their original language.

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