17-603 Thin hidden square door closer

Soft closing: the door closer has soft-closing and initial shock absorber functions.
Can be installed in wide range of temperature, from -30° to +60° (suitable for Russian winter).
Keeps door opened at 90°.
Double stage speed controller: 180°-15° and latching speed controlled: 15°-0°.
Latching speed can be adjusted independently.
Closing speed can be adjusted independently, from fastest closing time of 3 sec to slowest > 40sec.
Operating life: 300.000 cycles.